DeDietrich Innovens MCA 15, Innovens MCA 25/28 MI, Innovens MCA 25 Installation And Service Manual

Download

Page 1

Innovens

Wall-hung gas condensing boilers

MCA 15 - MCA 25 MCA 25/28 MI

Installation and Service Manual

300022146-001-B

Page 2

EG - VERKLARING VAN OVEREENSTEMMING

EC - DECLARATION OF CONFORMITY EG - KONFORMITÄTSERKLÄRUNG DÉCLARATION DE CONFORMITÉ CE

Fabrikant/Manufacturer/Hersteller/Fabricant : Remeha B.V.

Adres/Address /Adresse : Kanaal Zuid 110

Stad,Land/City,Country/Land,Ort/Ville, pays : Postbus 32, NL-7300 AA Apeldoorn

verklaart hiermede dat de toestel(len) : MCA ../.. (MI) (BIC) this is to declare that the following product(s) : erklärt hiermit das die Produk(te) : déclare ici que les produit(s) suivant(s) :

op de markt gebracht door : De Dietrich Thermique distributor : 57, rue de la Gare, F-67580 Vertreiber : Commercialisé (s) par :

voldoet/voldoen aan de bepalingen van de onderstaande EEG-richtlijnen: is/are in conformity with the following EEC-directives: den Bestimmungen der nachfolgenden EG-Richtlinien entspricht/entsprechen:

répond/répondent aux directives CEE suivantes:

EEG-Richtlijn: 90/396/EEG toegepaste normen:

EEC-Directive: 90/396/EEC tested and examined to the following norms:

EG-Richtlinie: 90/396/EWG verwendete Normen, normes appliquées:

CEE-Directive: 90/396/CEE EN 297

(1994*), 483(1999*), 677(1998*)

92/42/EEG 92/42/EEC 92/42/EWG 92/42/CEE

2006/95/EEG

EN 50165(1997*), EN 60335-1(1994*) 2006/95/EEC EN 60335-2-102(2004*) 08 2006/95/EWG 2006/95/CEE

2004/108/EEG

EN 50165(1997*) 2004/108/EEC EN 55014-2

(1997*), EN 55014-1(2000*),

2004/108/EWG EN 61000-3-2(2000*) , 61000-3-3(1995*) 2004/108/CEE

97/23/EEG (art. 3, lid 3)

97/23/EEC (article 3, sub 3) 97/23/EWG (Art. 3, Abzats 3) 97/23/CEE (art.3 section 3)

*) inclusief (eventuele) aanvulling, including (if any) competion

einschließlich (falls vorhanden) Vervollständigung, y compris (le cas échéant) complément

Apeldoorn, decembre 2009

W.F. Tijhuis Approval manager

703/2009/12/128

C002860-A

MCA 15 - MCA 25 MCA 25/28 MI

Declaration of conformity

The appliance complies with the standard model described in declaration of compliance [. It is manufactured and distributed

pursuant to the requirements of european directives.

The original of the declaration of compliance is available from the manufacturer.

Page 3

Contents

1 Introduction ................................................................................................6

1.1 Used symbols .......................................................6

1.2 Abbreviations ........................................................6

1.3 General ..................................................................7

1.3.1 Manufacturer's liability .............................................7

1.3.2 Installer's liability .....................................................7

1.4 Homologations ......................................................7

1.4.1 Certifications ...........................................................7

1.4.2 Gas categories ........................................................8

1.4.3 Additional Directives ................................................8

1.4.4 Factory test .............................................................8

2 Safety instructions and recommendations ..............................................9

2.1 Safety instructions ...............................................9

2.2 Recommendations ................................................9

3 Technical description ..............................................................................11

3.1 General description ............................................11

3.2 Main parts ............................................................11

3.3 Operating principle .............................................12

3.3.1 Skeleton Diagrams ................................................12

3.3.2 Shunt pump ...........................................................12

3.3.3 Water flow rate ......................................................13

3.4 Technical characteristics ...................................13

3.4.1 Sensor characteristics ...........................................14

4 Installation ................................................................................................16

4.1 Regulations governing installation ...................16

4.2 Package list .........................................................16

4.2.1 Standard delivery ..................................................16

4.2.2 Accessories ...........................................................16

29/04/2010 - 300022146-001-B

4.3 Choice of the location ........................................17

4.3.1 Data plate ..............................................................17

4.3.2 Location of the appliance ......................................18

4.3.3 Ventilation .............................................................18

4.3.4 Main dimensions ...................................................19

Page 4

MCA 15 - MCA 25 MCA 25/28 MI

Contents

4.4 Installing the mounting frame ...........................20

4.5 Positioning the boiler .........................................21

4.6 Hydraulic connections .......................................22

4.6.1 Flushing the system ..............................................22

4.6.2 Connection of the heating circuit ...........................22

4.6.3 Hydraulic connection of the water circuit for domestic

use ........................................................................23

4.6.4 Connecting the expansion vessel .........................23

4.6.5 Connecting the condensate discharge pipe ..........24

4.6.6 Filling the siphon ...................................................24

4.7 Gas connection ...................................................25

4.8 Flue gas system connections ............................26

4.8.1 Classification .........................................................26

4.8.2 Lengths of the air/flue gas pipes ...........................27

4.9 Installing the outside sensor .............................28

4.9.1 Choice of the location ............................................28

4.9.2 Installing the outside sensor ..................................28

4.10 Electrical connections ........................................29

4.10.1 Control unit ............................................................29

4.10.2 Recommendations ................................................30

4.10.3 Position of the PCBs .............................................31

4.10.4 Accessing the connection terminal blocks ............32

4.10.5 Connecting a direct heating circuit ........................34

4.10.6 Connecting a direct heating circuit and a domestic hot

water tank ..............................................................35

4.10.7 Connecting two circuits and a domestic hot water tank

before the mixing tank ...........................................37

4.10.8 Connecting two circuits and a domestic hot water tank

after the mixing tank ..............................................39

4.10.9 Hot water storage tank connection ........................41

4.10.10 Pool connection .....................................................46

4.10.11 Connecting a mixed tank .......................................48

4.10.12 Connecting the options .........................................49

4.10.13 Connection in cascade ..........................................50

4.11 Electrical diagram ...............................................53

4.12 Filling the system ...............................................54

4.12.1 Water treatment ....................................................54

4.12.2 Filling the system ..................................................56

5 Start-up ......................................................................................................57

5.1 Control panel .......................................................57

5.1.1 Description of the keys ..........................................57

5.1.2 Description of the display ......................................58

5.1.3 Access to the various browsing levels ..................60

5.1.4 Browsing in the menus ..........................................62

5.2 Check points before commissioning ................63

5.2.1 Preparing the boiler for commissioning .................63

29/04/2010 - 300022146-001-B

Page 5

5.2.2 Gas circuit .............................................................64

5.2.3 Hydraulic circuit .....................................................64

5.2.4 Electrical connections ...........................................64

5.3 Putting the appliance into operation ................65

5.4 Gas settings ........................................................66

5.4.1 Adapting to another gas type ................................66

5.4.2 Setting the air/gas ratio (Full load) ........................67

5.4.3 Setting the air/gas ratio (Part load) ......................69

5.4.4 Basic setting for the gas/air ratio ...........................71

5.5 Checks and adjustments after

commissioning ...................................................71

5.5.1 Displaying the parameters in extended

mode .....................................................................71

5.5.2 Setting the parameters specific to the

installation .............................................................72

5.5.3 Naming the circuits and generators ......................75

5.5.4 Setting the heating curve ......................................76

5.5.5 Finalizing work ......................................................78

5.6 Reading out measured values ...........................78

5.7 Changing the settings ........................................79

5.7.1 Language selection ...............................................80

5.7.2 Calibrating the sensors .........................................80

5.7.3 "Professional" settings ..........................................82

5.7.4 Configuring the network ........................................88

5.7.5 Returning to the factory settings ...........................96

6 Switching off the appliance .....................................................................97

6.1 Installation shutdown .........................................97

6.2 Frost protection ..................................................97

7 Checking and maintenance .....................................................................98

7.1 General instructions ...........................................98

7.2 Chimney sweep instructions .............................98

7.3 Customising maintenance .................................99

7.3.1 Maintenance message ..........................................99

7.3.2 Installer's contact details .....................................100

29/04/2010 - 300022146-001-B

7.4 Standard inspection and maintenance

operations .........................................................100

7.4.1 Checking the hydraulic pressure .........................101

7.4.2 Checking the opened expansion vessel ..............101

7.4.3 Checking the ionisation current ...........................101

7.4.4 Checking the transfer capacity ............................101

7.4.5 Checking the tightness of the combusted gases

evacuation and air inlet connections ...................101

7.4.6 Checking combustion ..........................................102

7.4.7 Checking the automatic air vent ..........................103

Page 6

MCA 15 - MCA 25 MCA 25/28 MI

7.4.8 Checking the safety valve ...................................104

7.4.9 Checking the siphon ............................................104

7.4.10 Checking the burner and cleaning the heat

exchanger ...........................................................105

Contents

7.5 Specific maintenance operations ....................106

7.5.1 Replacing the ionisation/ignition electrode ..........106

7.5.2 Cleaning the plate exchanger (domestic hot water

end) and the water filter cartridge .......................106

7.5.3 Replacing the 3-way valve ..................................109

7.5.4 Replacing the non-return valve ...........................110

7.5.5 Assembling the boiler ..........................................111

8 Troubleshooting .....................................................................................112

8.1 Messages (Code type Bxx or Mxx) ..................112

8.2 Message history ................................................114

8.3 Faults (Code type Lxx or Dxx) .........................115

8.3.1 Deletion of sensors from the memory in the

PCB .....................................................................123

8.3.2 Deleting the IOBL 3WV modules from the memory in

the PCB ..............................................................123

8.4 Failure history ...................................................124

8.5 Parameter and input/output check (mode

tests) ..................................................................125

9 Spare parts ..............................................................................................129

9.1 General ..............................................................129

9.2 Spare parts ........................................................129

9.2.1 Casing .................................................................130

9.2.2 Heat exchanger and burner ................................131

9.2.3 Fan ......................................................................132

9.2.4 Control panel .......................................................133

9.2.5 Connecting pipes (MCA 15 - MCA 25) ................134

9.2.6 Connecting pipes (MCA 25/28 MI) ......................135

9.2.7 Spare parts list ....................................................136

29/04/2010 - 300022146-001-B

Page 7

29/04/2010 - 300022146-001-B

Page 8

1. Introduction

1 Introduction

1.1 Used symbols

MCA 15 - MCA 25 MCA 25/28 MI

In these instructions, various danger levels are employed to draw the user's attention to particular information. In so doing, we wish to safeguard the user's safety, obviate hazards and guarantee correct operation of the appliance.

DANGER

Risk of a dangerous situation causing serious physical injury.

WARNING

Risk of a dangerous situation causing slight physical injury.

1.2 Abbreviations

CAUTION

Risk of material damage.

Signals important information.

¼ Signals a referral to other instructions or other pages in the instructions.

4 3CE: Collective conduit for sealed boiler 4 DHW: Domestic hot water 4 Interscenario switch: Home automation switch that can be used

to centralise and control several scenarios

4 Hi: Lower heating value LHV 4 Hs: Higher heating value HHV 4 IOBL: Carrier current home automation bus 4 PPS: Polypropylene hardly inflammable 4 PCU: Primary Control Unit - PCB for managing burner operation 4 PSU: Parameter Storage Unit - Parameter storage for PCBs

PCU and SU

4 SCU: Secondary Control Unit - Diematic iSystem control panel

PCB

4 SU: Safety Unit - Safety PCB 4 3WV: 3-way valve

29/04/2010 - 300022146-001-B

Page 9

MCA 15 - MCA 25 MCA 25/28 MI 1. Introduction

1.3 General

1.3.1. Manufacturer's liability

Our products are manufactured in compliance with the requirements of the various european applicable Directives. They are therefore

delivered with [ marking and all relevant documentation.

In the interest of customers, we are continuously endeavouring to make improvements in product quality. All the specifications stated in this document are therefore subject to change without notice.

Our liability as the manufacturer may not be invoked in the following cases:

4 Failure to abide by the instructions on using the appliance. 4 Faulty or insufficient maintenance of the appliance. 4 Failure to abide by the instructions on installing the appliance.

1.4 Homologations

1.3.2. Installer's liability

The installer is responsible for the installation and inital start up of the appliance. The installer must respect the following instructions:

4 Read and follow the instructions given in the manuals provided

with the appliance.

4 Carry out installation in compliance with the prevailing legislation

and standards.

4 Perform the initial start up and carry out any checks necessary. 4 Explain the installation to the user. 4 Warn the user of the obligation to check the appliance and

maintain it in good working order.

4 Give all the instruction manuals to the user.

1.4.1. Certifications

29/04/2010 - 300022146-001-B

CE identification no NOx classification Type of connection Chimney: B23 , B

PIN 0063BT3444

5 (EN 297 pr A3, EN 656)

Flue gas outlet: C13 , C33, C43, C53, C63, C83 , C

Page 10

1. Introduction

MCA 15 - MCA 25 MCA 25/28 MI

1.4.2. Gas categories

Gas category Gas type Connection pressure (mbar)

2ESi3P

Natural gas H (G20) 20 Natural gas L (G25) 25 Propane (G31) 37

The boiler is preset in the factory to operate on natural gas H (G20).

¼ For operation on another type of gas, see chapter: "Adapting to another gas type", page 66.

1.4.3. Additional Directives

Apart from the legal provisions and Directives, the additional Directives described in these instructions must also be observed.

For all provisions and Directives referred to in these instructions, it is agreed that all addenda or subsequent provisions will apply at the time of installation.

WARNING

Installation of the appliance must be done by a qualified engineer in accordance with prevailing local and national regulations.

1.4.4. Factory test

Before leaving the factory, each boiler is set for optimum performance and tested to check the following items:

4 Electrical safety 4 Adjustment (CO2) 4 Domestic hot water mode (Only on models with domestic hot water

production)

4 Water tightness 4 Gas tightness 4 Parameter settings

29/04/2010 - 300022146-001-B

Page 11

MCA 15 - MCA 25 MCA 25/28 MI

2 Safety instructions and

recommendations

2.1 Safety instructions

DANGER

If you smell gas:

1. Do not use a naked flame, do not smoke, do not operate electrical contacts or switches ( doorbell, light, motor, lift, etc..).

2. Isolate the gas supply.

3. Open the windows.

4. Trace possible leaks and seal them immediately.

5. If the gas leak is before the gas meter, contact the gas supplier.

2. Safety instructions and recommendations

2.2 Recommendations

DANGER

If you smell flue gases:

1. Switch the appliance off.

2. Open the windows.

3. Trace possible leaks and seal them immediately.

WARNING

4 Installation and maintenance of the boiler must be

carried out by a qualified professional in compliance with prevailing local and national regulations.

4 When working on the boiler, always disconnect the

boiler from the mains and close the main gas inlet valve.

4 After maintenance or repair work, check all

installations to ensure that there are no leaks.

CAUTION

29/04/2010 - 300022146-001-B

The boiler must be installed in a frost-free environment.

Keep this document close to the place where the boiler is installed.

Casing components

Page 12

2. Safety instructions and recommendations MCA 15 - MCA 25 MCA 25/28 MI

Only remove the casing for maintenance and repair operations. Put the casing back in place after maintenance and repair operations.

Instructions stickers

The instructions and warnings affixed to the appliance must never be removed or covered and must remain legible during the entire lifespan of the boiler. Immediately replace damaged or illegible instructions and warning stickers.

Modifications

Modifications may only be made to the boiler after the written permission of De Dietrich Thermique to do so.

29/04/2010 - 300022146-001-B

Page 13

T001867-C

1 22

MCA 15 - MCA 25 MCA 25/28 MI 3. Technical description

3 Technical description

3.1 General description

Wall-hung gas condensing boilers

4 High efficiency heating. 4 Low pollutant emissions. 4 Top of the range electronic DIEMATIC iSystem control panel 4 Installation and connection facilitated by the mounting frame

delivered with the appliance.

4 Flue gas discharge via a forced flue, chimney, bi-flow or 3CE type

connection.

4 MCA 15 - MCA 25: Heating only (Possibility of producing domestic

hot water via an independent tank which has been installed separately).

4 MCA 25/28 MI: Heating and micro-storage domestic hot water

production.

3.2 Main parts

Flue gas discharge pipe Casing/air box Outlet for measuring combustion gases Mixer pipe Heating flow hose Áir intake silencer Box for the control PCBs Combined venturi and gas valve unit Flow end hydrobloc Safety valve outlet pipe Siphon Control panel Shunt pump Return end hydrobloc Plate heat exchanger (DHW circuit) (Only on models with

domestic hot water production) Inverter valve Condensate receiver tank Fan Heat exchanger (Heating circuit)

29/04/2010 - 300022146-001-B

Page 14

T001868-B

4 5 6 7

T002537-B

0 200 400 600 800 1000 1200

Q (l/h)

10 kW

15 kW

20 kW

25 kW

615

545

435

295

437 623 830 1037

100

200

300

400

500

700

H (mbar)

600

3. Technical description

MCA 15 - MCA 25 MCA 25/28 MI

3.3 Operating principle

Expansion vessel Ignition/ionization electrode Air intake

3.3.1. Skeleton Diagrams

Heat exchanger (Heating circuit) Hydrobloc Plate heat exchanger (DHW circuit) (Only on models with

domestic hot water production) Heating flow Domestic hot water outlet Domestic cold water inlet Heating return

Inverter valve Shunt pump (Heating circuit) Expansion vessel

3.3.2. Shunt pump

The boiler is fitted with a modulating pump which is regulated by the control panel as a fuction of ΔT.

The graph shows the manometric height at various outputs. The parameters MIN.PUMP SPEED and MAX.PUMP SPEED are used to modify the pump settings. If flow noise can be heard in the system, it is possible to reduce the maximum pump speed with the parameter MAX.PUMP SPEED (First of all, vent the heating system). If circulation in the radiators is too low or the radiators do not fully heat up, increase the minimum pump speed with the parameter MIN.PUMP SPEED.

Manometric height central heating circuit Water flow

¼ See chapter: ""Professional" settings", page 82.

29/04/2010 - 300022146-001-B

Page 15

T001978-A

100

200

300

400

500

600

700

0 500

1037437

15001000 2000 2500

∆p [mbar]

Q [l/h]

623 830

∆T = 20K

10 kW

15 kW

20 kW

25 kW

MCA 15 - MCA 25 MCA 25/28 MI 3. Technical description

3.3.3. Water flow rate

The boiler's modulating control system limits the maximum difference in temperature between the heating flow and return and the maximum speed at which the flow temperature increases. In this way, the boiler does not require a minimum water flow rate.

Δp

Pressure drop Water flow (max = 1680 l/h)

3.4 Technical characteristics

Boiler type

General

Flow rate setting Adjustable Nominal output (Pn)

Heating System (80/60 °C)

Nominal output (Pn) Heating System (50/30 °C)

Nominal output (Pn) DHW System

Nominal input (Qn) Heating System (Hi)

Nominal input(Qn) Heating System (Hs)

Nominal input (Qnw) DHW System (Hi)

Nominal input (Qnw) DHW System (Hs)

minimum-maximum kW 3,0 - 14,5 5,0 - 24,1 5,0 - 24,1 Factory setting kW 14,5 24,1 19,4 minimum-maximum kW 3,4 - 15,8 5,6 - 25,5 5,6 - 25,5 Factory setting kW 15,8 25,5 20,5 minimum-maximum kW - - 5,0 - 28,6 Factory setting kW - - 28,6 minimum-maximum kW 3,1 - 15,0 5,2 - 25,0 5,2 - 25,0 Factory setting kW 15,0 25,0 20,1 minimum-maximum kW 3,4 - 16,7 5,8 - 27,8 5,8 - 27,8 Factory setting kW 16,7 27,8 22,3 minimum-maximum kW - - 5,2 - 28,0 Factory setting kW - - 28,0 minimum-maximum kW - - 5,8 - 31,1

Factory setting kW - - 31,1 Heating efficiency under full load (Hi) (80/60 °C) - % 96,5 96,3 96,3 Heating efficiency under full load (Hi) (50/30 °C) - % 105,3 102,0 102,0 Heating efficiency under partial load (Hi) (Return

- % 94,9 96,1 96,1

temperature 60°C) Heating efficiency under partial load (EN 92/42)

- % 108,5 108,0 108,0

(Return temperature 30°C)

Data on the gases and combustion gases

Gas consumption - Natural gas H (G20) minimum-maximum Gas consumption - Natural gas L (G25) minimum-maximum Gas consumption - Propane G31 minimum-maximum NOx-Emission per year or (n =1)

m3/h m3/h m3/h

mg/kWh 33 38 38

Mass flue gas flow rate minimum-maximum kg/h 5,3 - 25,2 8,9 - 42,1 8,9 - 47,1 Flue gas temperature minimum-maximum °C 30 - 65 30 - 80 30 - 85

(1) Front panel removed

29/04/2010 - 300022146-001-B

MCA 15 MCA 25 MCA 25/28 MI

Modulating, Start/Stop, 0 - 10 V

0,33 - 1,59 0,55 - 2,65 0,55 - 2,96 0,38 - 1,85 0,64 - 3,08 0,64 - 3,45 0,13 - 0,61 0,21 - 1,02 0,21 - 1,15

Page 16

3. Technical description MCA 15 - MCA 25 MCA 25/28 MI

Boiler type

Maximum counter pressure

Characteristics of the heating circuit

Water content Water operating pressure minimum kPa (bar) 80 (0,8) 80 (0,8) 80 (0,8) Water operating pressure (PMS) maximum kPa (bar) 300 (3,0) 300 (3,0) 300 (3,0) Water temperature maximum °C 110 110 110 Operating temperature maximum °C 90 90 90 Manometric height central heating circuit (∆T = 20K)

Characteristics of the domestic hot water circuit

Specific hot water flow D (60 °C) Specific hot water flow D (40 °C) Domestic water resistance Flow rate threshold minimum l/min - - 1,2 Water content Operating pressure (Pmw) maximum kPa (bar) - - 800 (8,0)

Electrical characteristics

Power supply voltage

Power consumption - Full load

Power consumption - Part load maximum W 25 25 25 Power consumption - Standby maximum W 4 4 4 Electrical protection index

Other characteristics

Weight (empty)

Acoustic level at 1 meter at high speed

(1) Front panel removed

maximum W 101 116 124

Factory setting W 63 76 76

Pa 80 120 130

l 1,7 1,7 1,7

mbar 545 295 295

l/min - - 8,2 l/min - - 13,7 mbar - - 490

l - - 0,33

VAC 230 230 230

Total kg 43 43 44

Mounting

(1)

kg 36 36 37 dBA 35 42 44

MCA 15 MCA 25 MCA 25/28 MI

IPX4D IPX4D IPX4D

3.4.1. Sensor characteristics

Outside sensor

-20 °C

-16 °C

-12 °C

-8 °C

-4 °C

0 °C

4 °C

8 °C

12 °C

16 °C

20 °C

24 °C

2392 ¨ 2088 ¨ 1811 ¨ 1562 ¨ 1342 ¨ 1149 ¨ 984 ¨ 842 ¨ 720 ¨ 616 ¨ 528 ¨ 454 ¨

Outlet sensor circuit B+C Domestic hot water sensor

0 °C

10 °C

20 °C

25 °C

30 °C

40 °C

50 °C

60 °C

70 °C

80 °C

90 °C

32014 ¨ 19691 ¨ 12474 ¨ 10000 ¨ 8080 ¨ 5372 ¨ 3661 ¨ 2535 ¨ 1794 ¨ 1290 ¨ 941 ¨

Boiler sensor Return sensor

-20 °C

-10 °C

0 °C

10 °C

20 °C

25 °C

30 °C

40 °C

50 °C

60 °C

70 °C

80 °C

98932 ¨ 58879 ¨ 36129 ¨ 22804 ¨ 14773 ¨ 12000 ¨ 9804 ¨ 6652 ¨ 4607 ¨ 3252 ¨ 2337 ¨ 1707 ¨

29/04/2010 - 300022146-001-B

Page 17

MCA 15 - MCA 25 MCA 25/28 MI 3. Technical description

Outside sensor Outlet sensor circuit B+C

Domestic hot water sensor

Boiler sensor Return sensor

90 °C

100 °C

110 °C

1266 ¨ 952 ¨ 726 ¨

29/04/2010 - 300022146-001-B

Page 18

4. Installation MCA 15 - MCA 25 MCA 25/28 MI

4 Installation

4.1 Regulations governing installation

WARNING

Installation of the appliance must be done by a qualified engineer in accordance with prevailing local and national regulations.

4.2 Package list

4.2.1. Standard delivery

The delivery includes:

4 The boiler, fitted with a connection cable 4 Mounting frame 4 Mounting template 4 Connection kit 4 Run-off collector for siphon and safety valve 4 Outside sensor 4 Installation and Service Manual 4 User Guide

4.2.2. Accessories

Various options are available depending on the configuration of the installation:

Boiler options

Description package Description package

Stand-off frame HR39 RX12 cable AD134 Pipework kit for stand-off frame HR40 TELCOM 2 voice remote monitoring module AD152 Pipe cover HR42 Flow sensor AD199 Flue gas thermostat HR43 DHW sensor AD212 adapter 80/125 HR38 Optional PCB for 3-way valve AD249 adapter 80-80 HR46 Hot water storage tank sensor AD250 Exchanger cleaning kit HR44 Outside radio-controlled temperature sensor AD251 Boiler body cleaning kit HR45 Boiler radio module AD252 DHW tank BS60 EE54 Radio remote control AD253 Kit for connection between MCA and BS60 EA138 Interactive remote control AD254

Control system options

29/04/2010 - 300022146-001-B

Page 19

T001539-B

MCA 15 - MCA 25 MCA 25/28 MI 4. Installation

Boiler options Control system options

Description package Description package

DHW tank SR130 EE22 Room sensor FM52 Kit for connection between MCA and SR130 EA137

4.3 Choice of the location

4.3.1. Data plate

The data plate located on top of the boiler provides important information on the appliance: serial number, model, gas category, etc.

29/04/2010 - 300022146-001-B

Page 20

T001583-A

450

min.1000

450

min. 250

690

T001584-A

min. 550

min.550

min. 250

50 (2)

min. 250

100 min. (1)

4. Installation

MCA 15 - MCA 25 MCA 25/28 MI

4.3.2. Location of the appliance

4 Before mounting the boiler, decide on the ideal position for

mounting, bearing the Directives and the dimensions of the appliance in mind.

4 When choosing the position for mounting the boiler, bear in mind

the authorised position of the combustion gas discharge outlets and the air intake opening.

4 To ensure adequate accessibility to the appliance and facilitate

maintenance, leave enough space around the boiler.

WARNING

4 Fix the appliance to a solid wall capable of bearing

the weight of the appliance when full of water and fully equipped.

4 It is forbidden to store inflammable products and

materials in the boiler room or close to the boiler, even temporarily.

CAUTION

4 The boiler must be installed in a frost-free

environment.

4 A connection to the mains drainage system for the

discharge of condensate must be available close to the boiler.

4.3.3. Ventilation

(1)

(2)

If the boiler is installed in a closed box, respect the minimum dimensions given in the diagram opposite. Also allow openings to obviate the following hazards:

4 Accumulation of gas 4 Heating of the box

Minimum cross section of the openings: S1 + S2 = 150 cm

Distance between the front of the appliance and the internal wall of the cupboard.

Distance to allow on either side of the appliance.

29/04/2010 - 300022146-001-B

Page 21

T001116-B

195

265

132

199

266

331

690

450

225

140

150

257,5

MCA 15 - MCA 25 MCA 25/28 MI 4. Installation

4.3.4. Main dimensions

i h

j z x

Gas / Gaz

Connection of the combustion gas exhaust pipe Ø 60 mm Connection of the air intake pipe Ø 100 mm Safety valve outlet pipe Ø 25 mm Condensates discharge Ø 25 mm Heating circuit return G¾" Domestic cold water inlet G½" Gas connection G½"

29/04/2010 - 300022146-001-B

y {

Domestic hot water outlet G½" Heating circuit flow G¾"

Page 22

T001869-A

4. Installation MCA 15 - MCA 25 MCA 25/28 MI

4.4 Installing the mounting frame

The boiler is delivered with a mounting template.

1. Position the mounting template to the wall with adhesive tape.

CAUTION

Using a spirit level, check that the mounting axis is perfectly horizontal.

2. Drill 3 holes with a Ø of 10 mm.

Additional holes are provided in case one or other of the standard locating holes prevents the correct location of the plugs.

3. Put the plugs in place.

4. Secure the mounting frame to the wall using the 3 hexagonal headed screws provided for this purpose.

29/04/2010 - 300022146-001-B

Page 23

T001870-A

T001627-A

T001872-A

MCA 15 - MCA 25 MCA 25/28 MI 4. Installation

4.5 Positioning the boiler

1. Remove the protective caps from all of the hydraulic inlets and outlets on the boiler.

2. Fit a fibre gasket to each joint on the valve plate.

29/04/2010 - 300022146-001-B

3. Position the boiler above the plumbing fixtures plate and locate it against the mounting frame. Gently lower the boiler.

4. Tighten the valve nuts on the boiler.

Page 24

T001625-A

4. Installation MCA 15 - MCA 25 MCA 25/28 MI

4.6 Hydraulic connections

4.6.1. Flushing the system

Installation must be carried out in accordance with the prevailing regulations, the codes of practice and the recommendations in these instructions.

Installing the boiler in new installations (installations

less than 6 months old)

4 Clean the installation with a universal cleaner to eliminate debris

from the appliance (copper, flaxen thread, flux).

4 Thoroughly flush the installation until the water runs clear and

shows no impurities.

Installing the boiler in existing installations

4 Remove sludge from the installation. 4 Flush the installation. 4 Clean the installation with a universal cleaner to eliminate debris

from the appliance (copper, flaxen thread, flux).

4 Thoroughly flush the installation until the water runs clear and

shows no impurities.

4.6.2. Connection of the heating circuit

1. Connect the heating water outlet pipe to the heating flow connection.

2. Connect the heating water inlet pipe to the heating return connection.

{ z

Connection by internal brazing ∅ 22 mm Connection by internal brazing ∅ 22 mm

29/04/2010 - 300022146-001-B

Page 25

T001633-B

T001626-A

MCA 15 - MCA 25 MCA 25/28 MI

4. Installation

4 The boiler is factory fitted with a safety valve mounted

on the left hydrobloc.

CAUTION

4 The heating pipe must be mounted in accordance

with prevailing provisions.

4.6.3. Hydraulic connection of the water circuit

for domestic use

1. Connect the cold water inlet pipe to the domestic cold water connection.

2. Connect the domestic hot water outlet pipe to the domestic hot water connection.

x y

Connection by internal brazing ∅ 16 mm Connection by internal brazing ∅ 16 mm

CAUTION

4 The domestic water pipes must be connected in

accordance with prevailing provisions.

4 If using synthetic pipes, follow the manufacturer's

(connection) instructions.

4.6.4. Connecting the expansion vessel

The boiler is fitted as standard with an 12-litre expansion vessel.

If the water volume is greater than 150 litres or the static height of the system exceeds 5 metres, an additional expansion vessel must be fitted. Refer to the table below to determine the opened expansion vessel required for the installation.

29/04/2010 - 300022146-001-B

Conditions of validity of the table:

4 3-bar safety valve 4 Average water temperature: 70 °C

Flow temperature: 80 °C Return temperature: 60 °C

4 The filling pressure in the system is lower than or equal to the initial

pressure in the opened expansion vessel

Page 26

T001873-C

T001523-B

4. Installation MCA 15 - MCA 25 MCA 25/28 MI

Initial pressure of the expansion vessel

0.5 bar 4,8 6,0 7,2 8,4 9,6 12,0 14,4 Volume of the installation x 0,048 1 bar 8,0 10,0

1.5 bar 13,3 16,6 20,0 23,3 26,6 33,3 39,9 Volume of the installation x 0,133

(1) Factory configuration

Volume of the opened expansion vessel depending on the volume of the installation (in litres)

100 125 150 175 200 250 300 > 300

(1)

12,0

14,0 16,0 20,0 24,0 Volume of the installation x 0,080

4.6.5. Connecting the condensate discharge pipe

1. Mount a standard drainage pipe, Ø 32 mm or more, leading to the mains drainage system.

2. Mount the flow collector.

3. Into this, insert the condensate collector hose coming from the

siphon j and the safety valve ê.

4. Into this, insert the discharge hose from the disconnector.

5. Mount a trap or a siphon in the discharge pipe.

CAUTION

Do not make a fixed connection owing to maintenance work on the siphon.

4 Do not plug the condensate discharge pipe. 4 Set the discharge pipe at a gradient of at least 30

mm per metre, maximum horizontal length 5 metres.

4 Do not drain condensation water into a roof gutter at

any time.

4 Connect the condensate discharge pipe in

accordance with prevailing standards.

4.6.6. Filling the siphon

1. Remove the siphon.

2. Fill the siphon with water. This must be filled up to the level markers.

3. Re-assemble the siphon.

CAUTION

4 Fill the water siphon before starting the boiler to avoid

combustion products escaping from the boiler.

4 Mount the vent hose above the siphon.

29/04/2010 - 300022146-001-B

Page 27

T001621-A

MCA 15 - MCA 25 MCA 25/28 MI 4. Installation

4.7 Gas connection

The diameters of the pipes must be defined in accordance with the standards in force in your country.

Connection by internal brazing ∅ 18 mm

1. Connect the gas inlet pipe.

WARNING

4 Close the main gas valve before starting work on the

gas pipes.

4 Before mounting, check that the gas meter has

sufficient capacity. To do this, you should bear in mind the consumption of all domestic appliances.

4 If the gas meter has too low a capacity, inform the

energy supply company.

CAUTION

4 Ensure that there is no dust in the gas pipe. Blow into

the pipe or shake it before mounting.

4 We recommend installing a gas filter on the gas pipe

to prevent clogging of the gas valve unit.

4 Connect the gas pipe in accordance with prevailing

standards and regulations.

29/04/2010 - 300022146-001-B

Page 28

Lmax = L1+L2

Lmax =

1+L2

Lmax

max

Lmax

T000275-D

4. Installation MCA 15 - MCA 25 MCA 25/28 MI

4.8 Flue gas system connections

4.8.1. Classification

Configuration C

Air/flue gas connection by means of concentric pipes to a horizontal terminal (so-called forced flue)

Configuration C

Air/flue gas connection by means of concentric pipes to a vertical terminal (roof outlet)

Configuration C

Air/flue gas connection by concentric pipes in the boiler room and single pipes in the chimney (combustive air in counter current in the chimney)

29/04/2010 - 300022146-001-B

Page 29

MCA 15 - MCA 25 MCA 25/28 MI

4. Installation

Configuration C

Air/flue gas connection by concentric pipes in the boiler room and single "flex" in the chimney (combustive air in counter current in the chimney)

WARNING

4 Only factory components are authorised for

connecting the boiler and the terminal.

4 The clear section must comply with the

standard.

4 The chimney must be swept before the

installation of the evacuation conduit.

Configuration C

Air and flue gas connection separated by means of a biflow adapter and single pipes (combustive air taken from outside)

Configuration B

Connection to a chimney using a connection kit (combustive air taken from the boiler room)

Configuration C

Air/flue gas connection to a collective conduit for watertight boilers (3CE system)

4.8.2. Lengths of the air/flue gas pipes

Type of air/flue gas connection

C13Concentric pipes connected to a horizontal terminal Alu or PPS 60/100 mm 12.0 3.5 4.2

C33Concentric pipes connected to a vertical terminal Alu or PPS 60/100 mm 13.0 4.9 5.5

C93Concentric pipes in the boiler room

Single conduits in the chimney (combustive air in counter-current)

Concentric pipes in the boiler room Flexible single conduit in the chimney

C53Bi-flow adapter and separate single air/flue gas ducts

(combustive air taken from outside)

B23Chimney (rigid or flexible duct in furnace flue,

combustive air taken from the premises)

Alu or PPS 60/100 mm

PPS 60/100 mm

Alu 60/100 mm

PPS 80 mm (Rigid duct) 50.0 50.0 50.0

Diameter Maximum length in metres

MCA 15 MCA 25 MCA 25/28

80/125 mm 12.3 23.0 25.7

80/125 mm 10.7 21.0 23.6

15.0 8.1 9.1

60 mm (Rigid duct)

9.9 20.0 22.7

80 mm (Flexible duct)

50.0 50.0 50.0

2 x 80 mm

80 mm (Flexible duct)

45.0 45.0 45.0

29/04/2010 - 300022146-001-B

WARNING

Maximum length = lengths of the straight air/flue gas ducts + equivalent lengths of other components

For the list of flue gas system accessories and the equivalent lengths, refer to the current price list.

Page 30

8800N001-C

8800N002-C

4. Installation

4.9 Installing the outside sensor

4.9.1. Choice of the location

It is important to select a place that allows the sensor to measure the outside conditions correctly and effectively.

Advised positions:

4 on one face of the area to be heated, on the north if possible 4 half way up the wall in the room to be heated 4 under the influence of meteorological variations 4 protected from direct sunlight 4 easy to access

MCA 15 - MCA 25 MCA 25/28 MI

Recommended position Possible position Inhabited height controlled by the sensor Inhabited area controlled by the sensor

Positions to be avoided:

4 masked by a building element (balcony, roof, etc.) 4 close to a disruptive heat source (sun, chimney, ventilation grid,

etc.)

4.9.2. Installing the outside sensor

Mount the sensor using the screws and dowels provided.

29/04/2010 - 300022146-001-B

Page 31

8800N003-B

C002336-E

MCA 15 - MCA 25 MCA 25/28 MI 4. Installation

4.10 Electrical connections

CB wood screws diameter 4 + dowels

4.10.1. Control unit

The boiler is fully pre-wired. The mains supply is made via the cable C connected to the mains. All other external connections can be made to the connection connectors (low voltage). The main characteristics of the control unit are described in the table below.

Power supply voltage 230 VAC/50Hz Rating of the main fuse F1 (230 VAC) 6.3 AT Fuse rating F2 (230 VAC) 2 AT Fan-DC 27 VDC

CAUTION

Keep to the polarity shown on the terminals: phase (L), neutral (N) and earth *.

Routing of the 230 V cables Routing of the sensor cables Power supply cable 6,3 AT fuse 2 AT fuse

CAUTION

The following components of the appliance are at a voltage of 230 V:

4 Boiler pump. 4 Combined venturi and gas valve unit. 4 Inverter valve. 4 The majority of components in the control panel and

the terminal box.

4 Power supply cable.

29/04/2010 - 300022146-001-B

Page 32

4. Installation MCA 15 - MCA 25 MCA 25/28 MI

4.10.2. Recommendations

WARNING

4 Only qualified professionnals may carry out electrical

connections, always with the power off.

4 The boiler is entirely pre-wired. Do not modify the

connections inside the control panel.

4 Earth the appliance before making any electrical

connections.

Make the electrical connections of the appliance according to:

4 the instructions of the prevailing standards. 4 the instructions on the circuit diagrams provided with the

appliance.

4 the recommendations in the instructions.

CAUTION

4 Separate the sensor cables from the 230 V cables. 4 Outside the boiler: Use 2 pipes or cable guides at

least 10 cm apart.

29/04/2010 - 300022146-001-B

Page 33

PCU

PSU

On/off

OT BL RL Tout Tdhw

TS + B AB

0-10V

S AMB C

4 3 2 1 2 1

+ -

S AMB B

2 1

S AMB A

2 1

S SYST + TA -

S ECS S EXT S DEP C

2 12 12 12 1 2 1

S DEP B

2 1

TS + C AUXC

SCU

PCU

C002299-F

MCA 15 - MCA 25 MCA 25/28 MI 4. Installation

4.10.3. Position of the PCBs

A Z E

Do not connect anything to the terminal block. Optional PCB (Package AD249) Do not connect anything to the terminal block.

29/04/2010 - 300022146-001-B

Page 34

C002325-C

C002326-B

4. Installation MCA 15 - MCA 25 MCA 25/28 MI

4.10.4. Accessing the connection terminal blocks

To access the connection terminal blocks, proceed as follows:

1. Unscrew the 2 screws under the front panel by a quarter turn.

2. Remove the front panel.

3. Open the holding clips located on the sides.

4. Tilt the control panel forward.

29/04/2010 - 300022146-001-B

Page 35

C002327-B

C002330-C

MCA 15 - MCA 25 MCA 25/28 MI 4. Installation

5. Lift the clip located in front of the control panel.

6. Lift the control panel cover.

7. Unclip the PCB cover.

29/04/2010 - 300022146-001-B

Page 36

C002304-M

On/off

OT BL RL Tout Tdhw

TS + B AB

0-10V

S AMB C

4 3 2 1 2 1

+ -

S AMB B

2 1

S AMB A

2 1

S SYST + TA -

S ECS S EXT S DEP C

2 12 12 12 1 2 1

S DEP B

2 1

SCU PCU

4. Installation MCA 15 - MCA 25 MCA 25/28 MI

4.10.5. Connecting a direct heating circuit

A Z E

Do not connect anything to the terminal block. Connect the outside temperature sensor. Connect a safety thermostat if the heating circuit is for

underfloor heating.

4 Remove the bridge. 4 Connect the wires from the safety thermostat to the

connector.

Settings to be made for this type of installation

Parameters Access Settings to be made See chapter

INSTALLATION

If safety thermostat is connected to BL on the connection terminal block:

"Installer" level #SYSTEM menu

"Installer" level

#PRIMARY INSTAL.P

IN.BL

Do not connect anything to the terminal block.

EXTENDED

STOP HEAT

¼ "Displaying the parameters in extended mode", page 71

¼ ""Professional" settings", page 82

29/04/2010 - 300022146-001-B

Page 37

C002305-j

On/off

OT BL RL Tout Tdhw

1 2

TS + B AB

0-10V

S AMB C

4 3 2 1 2 1

+ -

S AMB B

2 1

S AMB A

2 1

S SYST + TA -

S ECS S EXT S DEP C

2 12 12 12 1 2 1

S DEP B

2 1

SCU PCU

MCA 15 - MCA 25 MCA 25/28 MI 4. Installation

4.10.6. Connecting a direct heating circuit and a

domestic hot water tank

A Z

E R

Do not connect anything to the terminal block.

CAUTION

Do not connect anything to the Mr outlet on the terminal block. The reversal valve is connected to the PCU PCB in the boiler.

Connect the outside temperature sensor. Connect a safety thermostat if the heating circuit is for

underfloor heating.

4 Remove the bridge. 4 Connect the wires from the safety thermostat to the

connector.

29/04/2010 - 300022146-001-B

Page 38

4. Installation MCA 15 - MCA 25 MCA 25/28 MI

Connect the DHW tank anode.

CAUTION

4 If the tank is fitted with a Titan Active

System® impressed current anode, connect the anode to the inlet (+ on the anode, - on the tank).

4 If the tank is not fitted with an impressed

current anode, put the simulation connector in place (delivered with the DHW sensor - package AD212).

Y U

Connect the DHW sensor (Package AD212). Connect the domestic hot water looping pump

(Optional).

Settings to be made for this type of installation

Parameters Access Settings to be made See chapter

INSTALLATION

If a domestic hot water looping pump is connected to MA on the terminal block:

O.PUMP A

If safety thermostat is connected to

BL on the connection terminal block: IN.BL

(1) The parameter is only displayed if INSTALLATION parameter is set to EXTENDED

(1)

"Installer" level #SYSTEM menu

"Installer" level

#PRIMARY INSTAL.P

Do not connect anything to the terminal block.

EXTENDED

¼ "Displaying the parameters in extended mode", page 71

DHW LOOP

¼ "Setting the parameters specific to the installation", page 72

TOTAL STOP

¼ ""Professional" settings", page 82

29/04/2010 - 300022146-001-B

Page 39

C002367-F

1 2

On/off

OT BL RL Tout Tdhw

TS + B AB

0-10V

S AMB C

4 3 2 1 2 1

+ -

S AMB B

2 1

S AMB A

2 1

S SYST + TA -

S ECS S EXT S DEP C

2 12 12 12 1 2 1

S DEP B

2 1

TS + C AUXC

SCU PCU

MCA 15 - MCA 25 MCA 25/28 MI 4. Installation

4.10.7. Connecting two circuits and a domestic hot

water tank before the mixing tank

A Z

E R

Do not connect anything to the terminal block.

CAUTION

Do not connect anything to the Mr outlet on the terminal block. The reversal valve is connected to the PCU PCB in the boiler.

Connect the outside temperature sensor. Connect a safety thermostat if the heating circuit is for

underfloor heating.

29/04/2010 - 300022146-001-B

4 Remove the bridge. 4 Connect the wires from the safety thermostat to the

connector.

Connecting an additional circuit to the AD249 option.

Page 40

4. Installation MCA 15 - MCA 25 MCA 25/28 MI

U I

O P

a z

Connect the heating pump (circuit A).

If underfloor heating is being used, put a safety thermostat in place after the heating pump. The safety thermostat will shut down the heating

pump in the event of overheating. Low loss header. Connect the DHW tank anode.

CAUTION

4 If the tank is fitted with a Titan Active

System® impressed current anode, connect the anode to the inlet (+ on the anode, - on the tank).

4 If the tank is not fitted with an impressed

current anode, put the simulation connector in place (delivered with the DHW sensor - package AD212).

Connect the heating pump (circuit B).

Connect the 3-way valve (circuit B).

Connect the DHW sensor (Package AD212). Connect the domestic hot water looping pump to the

AUX outlet on the AD249 option

Do not connect anything to the terminal block.

29/04/2010 - 300022146-001-B

Page 41

C002293-j

On/off

OT BL RL Tout Tdhw

TS + B AB

0-10V

S AMB C

4 3 2 1 2 1

+ -

S AMB B

2 1

S AMB A

2 1

S SYST + TA -

S ECS S EXT S DEP C

2 12 12 12 1 2 1

S DEP B

2 1

TS + C AUXC

SCU PCU

MCA 15 - MCA 25 MCA 25/28 MI 4. Installation

4.10.8. Connecting two circuits and a domestic hot water tank after the mixing tank

A Z E

R T

Do not connect anything to the terminal block. Connect the outside temperature sensor. Connect a safety thermostat if the heating circuit is for

underfloor heating.

4 Remove the bridge. 4 Connect the wires from the safety thermostat to the

connector. Low loss header Connecting an additional circuit to the AD249 option.

29/04/2010 - 300022146-001-B

Page 42

4. Installation MCA 15 - MCA 25 MCA 25/28 MI

I O P

Connect the heating pump (circuit A).

If underfloor heating is being used, put a safety thermostat in place after the heating pump. The safety thermostat will shut down the heating pump in the event of overheating.

Connect the DHW tank anode.

CAUTION

4 If the tank is fitted with a Titan Active

System® impressed current anode, connect the anode to the inlet (+ on the anode, - on the tank).

4 If the tank is not fitted with an impressed

current anode, put the simulation connector in place (delivered with the DHW sensor - package AD212).

Connect the heating pump (circuit B).

Connect the 3-way valve (circuit B).

Connect the DHW sensor (Package AD212). Connect the domestic hot water looping pump to the

MAUX outlet on the AD249 option.

Settings to be made for this type of installation

Parameters Access Settings to be made See chapter

INSTALLATION

O.DHW:

(1) The parameter is only displayed if INSTALLATION parameter is set to EXTENDED

(1)

"Installer" level #SYSTEM menu

"Installer" level

#SYSTEM menu

EXTENDED

PUMP

Do not connect anything to the terminal block.

¼ "Displaying the parameters in extended mode", page 71

¼ "Setting the parameters specific to the installation", page 72

29/04/2010 - 300022146-001-B

Page 43

C002368-H

On/off

OT BL RL Tout Tdhw

TS + B AB

0-10V

S AMB C

4 3 2 1 2 1

+ -

S AMB B

2 1

S AMB A

2 1

S SYST + TA -

S ECS S EXT S DEP C

2 12 12 12 1 2 1

S DEP B

2 1

SCU PCU

MCA 15 - MCA 25 MCA 25/28 MI 4. Installation

4.10.9. Hot water storage tank connection

QUADRO DU 750 storage tank

In this installation example, the storage tank (type QUADRO DU

750) incorporates a domestic hot water zone. The boiler starts up systematically to maintain the domestic hot water zone in the storage tank or to maintain the independent tank at temperature.

If the storage tank does not have a DHW zone, use an independent domestic hot water tank.

A Z E

Do not connect anything to the terminal block. Connect the heating pump (Circuit A). Connect the DHW tank anode.

If the tank is not fitted with an impressed current anode, put the simulation connector in place (delivered with the DHW sensor - package AD212).

R T

Connect the DHW sensor (Package AD212). Connect the sensor from the storage tank (Package

AD250).

29/04/2010 - 300022146-001-B

Page 44

4. Installation MCA 15 - MCA 25 MCA 25/28 MI

Y U I O

Settings to be made for this type of installation

Parameters Access Settings to be made See chapter

INSTALLATION

(1)

I.SYST

(1) The parameter is only displayed if INSTALLATION parameter is set to EXTENDED

"Installer" level #SYSTEM menu

"Installer" level

#SYSTEM menu

EXTENDED

STORAGE TANK

Buffer tank. Solar sensor probe. Connect the solar station to the solar collectors. Do not connect anything to the terminal block.

¼ "Displaying the parameters in extended mode", page 71

¼ "Setting the parameters specific to the installation", page 72

The DHW part is maintained at the DHW set point by the boiler. The heating zone is maintained at the set temperature calculated according to the outside temperature. The zone is reheated when the heating buffer temperature sensor T falls -6°C below the calculated set temperature. Reheating in the heating zone stops when the heating buffer temperature rises above the calculated set temperature.

29/04/2010 - 300022146-001-B

Page 45

G000030A

On/off

OT BL RL Tout Tdhw

TS + B AB

0-10V

S AMB C

4 3 2 1 2 1

+ -

S AMB B

2 1

S AMB A

2 1

S SYST + TA -

S ECS S EXT S DEP C

2 12 12 12 1 2 1

S DEP B

2 1

SCU PCU

MCA 15 - MCA 25 MCA 25/28 MI 4. Installation

PS storage tank and DHW tank connected to the boiler

The boiler only starts up if the storage tank is not hot enough to guarantee loading of the DHW tank.

A Connect a domestic hot water tank if the storage tank R

is only used for heating

Z E R

Connect the DHW sensor (Package AD212). Connect the heating pump (Circuit A).

Buffer tank.

T Y U

Connect the sensor from the storage tank. Solar sensor probe. Connect the solar station to the solar collectors.

29/04/2010 - 300022146-001-B

Page 46

4. Installation MCA 15 - MCA 25 MCA 25/28 MI

Connect the DHW tank anode.

If the tank is not fitted with an impressed current anode, put the simulation connector in place (delivered with the DHW sensor - package AD212).

Settings to be made for this type of installation

Parameters Access Settings to be made See chapter

INSTALLATION

(1)

I.SYST

O.DHW:

(1) The parameter is only displayed if INSTALLATION parameter is set to EXTENDED

(1)

"Installer" level #SYSTEM menu

"Installer" level

#SYSTEM menu

EXTENDED

STORAGE TANK

PUMP

Do not connect anything to the terminal block.

¼ "Displaying the parameters in extended mode", page 71

¼ "Setting the parameters specific to the installation", page 72

The DHW part is maintained at the DHW set point by the boiler. The heating zone is maintained at the set temperature calculated according to the outside temperature. The zone is reheated when the heating buffer temperature sensor falls -6°C below the calculated set temperature. Reheating in the heating zone stops when the heating buffer temperature rises above the calculated set temperature.

PS storage tank and DHW tank connected to the storage

tank

The boiler only starts up production of domestic hot water if the storage tank is not hot enough to guarantee tank loading.

29/04/2010 - 300022146-001-B

Page 47

C002369-F

On/off

OT BL RL Tout Tdhw

TS + B AB

0-10V

S AMB C

4 3 2 1 2 1

+ -

S AMB B

2 1

S AMB A

2 1

S SYST + TA -

S ECS S EXT S DEP C

2 12 12 12 1 2 1

S DEP B

2 1

SCU PCU

MCA 15 - MCA 25 MCA 25/28 MI 4. Installation

A Z E

R T Y U

Do not connect anything to the terminal block. Connect the heating pump (Circuit A).

Connect the DHW tank anode.

If the tank is not fitted with an impressed current anode, put the simulation connector in place (delivered with the DHW sensor - package

AD212). Buffer tank. Solar sensor probe. Connect the solar station to the solar collectors. Domestic hot water boiler.

Connect the DHW sensor.

Do not connect anything to the terminal block.

29/04/2010 - 300022146-001-B

Page 48

C002298-i

On/off

OT BL RL Tout Tdhw

TS + B AB

0-10V

S AMB C

4 3 2 1 2 1

+ -

S AMB B

2 1

S AMB A

2 1

S SYST + TA -

S ECS S EXT S DEP C

2 12 12 12 1 2 1

S DEP B

2 1

SCU PCU

4. Installation MCA 15 - MCA 25 MCA 25/28 MI

Settings to be made for this type of installation

Parameters Access Settings to be made See chapter

INSTALLATION

(1)

I.SYST

O.DHW:

(1)

"Installer" level #SYSTEM menu

"Installer" level

EXTENDED

ST.TANK+DHW

PUMP

¼ "Displaying the parameters in extended mode", page 71

¼ "Setting the parameters specific to the installation", page 72

#SYSTEM menu

(1) The parameter is only displayed if INSTALLATION parameter is set to EXTENDED

The DHW tank is loaded from the storage tank. If, during DHW loading, the temperature of the storage tank falls below the primary DHW set point (parameter PRIM.TEMP.DHW), the boiler maintains the latter at temperature to guarantee the loading of the DHW tank The heating zone is maintained at the set temperature calculated according to the outside temperature. The zone is reheated when the heating buffer temperature sensor falls -6°C below the calculated set temperature. Reheating in the heating zone stops when the heating buffer temperature rises above the calculated set temperature.

4.10.10. Pool connection

A Z E

Connect the secondary swimming pool pump. Connect the swimming pool sensor. Plate heat exchanger.

29/04/2010 - 300022146-001-B

Page 49

MCA 15 - MCA 25 MCA 25/28 MI 4. Installation

Pool heating cut-off control

When the parameter I.TEL: is on 0/1 B, the

swimming pool is no longer heated when the

contact is open (factory setting), only the

antifreeze continues to be active.

The contact direction can still be adjusted by the

parameter CT.TEL.

T Y

Settings to be made for this type of installation

Parameters Access Settings to be made See chapter

INSTALLATION

CIRC. B:

If I.TEL: is used I.TEL:

MAX. CIRC. B

"Installer" level #SYSTEM menu

"Installer" level

#SECONDARY LIMITS menu

EXTENDED

SWIM.P.

0/1 B

Set the value of MAX.CIRC.B to the temperature corresponding to the needs of the exchanger

Connect the primary swimming pool pump. Do not connect anything to the terminal block.

¼ "Displaying the parameters in extended mode", page 71

¼ "Setting the parameters specific to the installation", page 72

¼ ""Professional" settings", page 82

Controlling the pool circuit

The control system can be used to manage a swimming pool circuit in both cases:

Case 1: The control system regulates the primary circuit (boiler/ exchanger) and the secondary circuit (exchanger/pool).

4 Connect the primary circuit pump (boiler/exchanger) to the MB

outlet on the connection terminal block. The temperature MAX.CIRC.B is then guaranteed during comfort periods on programme B in summer and winter alike.

4 Connect the swimming pool sensor (package AD212) to the S

DEP B inlet on the connection terminal block.

4 Set the set point of the pool sensor using key C in the range 5 -

39°C.

Case 2: The pool has already a regulation system that is to be kept. The control system only regulates the primary circuit (boiler/exchanger).

4 Connect the primary circuit pump (boiler/exchanger) to the MB

outlet on the connection terminal block. The temperature MAX.CIRC.B is then guaranteed during comfort periods on programme B in summer and winter alike.

29/04/2010 - 300022146-001-B

The swimming pool can also be connected to circuit C by adding the AD249 option:

4 Make the connection to the terminal blocks marked

4 Set the parameters for circuit C.

Page 50

C002432-E

On/off

OT BL RL Tout Tdhw

TS + B AB

0-10V

S AMB C

4 3 2 1 2 1

+ -

S AMB B

2 1

S AMB A

2 1

S SYST + TA -

S ECS S EXT S DEP C

2 12 12 12 1 2 1

S DEP B

2 1

TS + C AUXC

SCU PCU

4. Installation MCA 15 - MCA 25 MCA 25/28 MI

Hourly programming of the secondary circuit pump

The secondary pump operates during programme B comfort periods in summer and winter alike.

Stopping

To prepare your pool for winter, consult your pool specialist.

4.10.11. Connecting a mixed tank

A Z

Do not connect anything to the terminal block. Option of connecting the electric tank (with AD249

option) or to E

Outlet circuit A - Option of connecting the electric tank (or to Z)

Power control relay to the electrical resistor

29/04/2010 - 300022146-001-B

Page 51

C002294-F

PRG

TELCOM 2

ALP

AL2

AL1

SET

#09

4321

On/off

OT BL RL Tout Tdhw

TS + B AB

0-10V

S AMB C

4 3 2 1 2 1

+ -

S AMB B

2 1

S AMB A

2 1

S SYST + TA -

S ECS S EXT S DEP C

2 12 12 12 1 2 1

S DEP B

2 1

TS + C AUXC

SCU PCU

MODE

0 2 4 6 8 10 12 14 16 18 22 2420

MODE

0 2 4 6 8 10 12 14 16 18 22 2420

MCA 15 - MCA 25 MCA 25/28 MI 4. Installation

Connect the DHW tank anode.

If the tank is not fitted with an impressed current

anode, put the simulation connector in place

(delivered with the DHW sensor - package

AD212).

Y U I

Settings to be made for this type of installation

Parameters Access Settings to be made See chapter

INSTALLATION

If the electric tank is connected to MA: CIRC. A:

(1)

If the electric tank is connected to

MAUX: S.AUX:

(1) The parameter is only displayed if INSTALLATION parameter is set to EXTENDED

(1)

"Installer" level #SYSTEM menu

Connect the DHW sensor (Package AD212). Connect the outside temperature sensor Do not connect anything to the terminal block.

EXTENDED

¼ "Displaying the parameters in extended mode", page 71

DHW ELEC

¼ "Setting the parameters specific to the installation", page 72

DHW ELEC

4.10.12. Connecting the options

For example: TELCOM remote vocal monitoring module, remote controls for circuits A and B, second DHW tank

29/04/2010 - 300022146-001-B

Page 52

C002435-C

4. Installation MCA 15 - MCA 25 MCA 25/28 MI

A Z E R T Y

Do not connect anything to the terminal block. Connect the load pump to the second tank. Second domestic hot water tank Connect the DHW sensor from the second tank. Alarm indicator Connect the TELCOM remote vocal monitoring module

(depending on its availability in your country).

U I O

Settings to be made for this type of installation

Parameters Access Settings to be made See chapter

INSTALLATION

O.PUMP A

If second tank connected:

S.AUX:

(1) The parameter is only displayed if INSTALLATION parameter is set to EXTENDED

(1)

"Installer" level #SYSTEM menu

"Installer" level

#SYSTEM menu

EXTENDED

FAILURE

DHW

Connecting the BUS cascade, VM Connect the remote control (Package AD254/FM52). Do not connect anything to the terminal block.

¼ "Displaying the parameters in extended mode", page 71

¼ "Setting the parameters specific to the installation", page 72

4.10.13. Connection in cascade

DHW tank after the mixing tank

A Z

Master boiler Secondary boiler

29/04/2010 - 300022146-001-B

Page 53

MCA 15 - MCA 25 MCA 25/28 MI 4. Installation

E R T Y U I

Secondary boiler D.H.W. load pump Connect the DHW sensor (Package AD212) Cable BUS

Low loss header Cascade outlet sensor

Connect the sensor to the terminal block S SYST on the master boiler.

Settings to be made for this type of installation: Master boiler

Parameters Access Settings to be made See chapter

INSTALLATION

O.DHW:

CASCADE:

MASTER CONTROLLER

SYSTEM NETWORK

(1) The parameter is only displayed if INSTALLATION parameter is set to EXTENDED

(1)

"Installer" level #SYSTEM menu

"Installer" level #NETWORK menu

"Installer" level #SYSTEM menu

(1)

"Installer" level

#SYSTEM menu

EXTENDED

PUMP

ADD SLAVE

¼ "Displaying the parameters in extended mode", page 71

¼ "Setting the parameters specific to the installation", page 72

¼ "Configuring the network", page 88

Settings to be made for this type of installation: Follower boilers

Parameters Access Settings to be made See chapter

INSTALLATION

CASCADE:

MASTER CONTROLLER

SLAVE NUMBER

(1) The parameter is only displayed if INSTALLATION parameter is set to EXTENDED

(1)

"Installer" level #SYSTEM menu

"Installer" level #NETWORK menu

"Installer" level #SYSTEM menu

"Installer" level

#SYSTEM menu

EXTENDED

OFF

2, 3, ...

¼ "Displaying the parameters in extended mode", page 71

¼ "Configuring the network", page 88

29/04/2010 - 300022146-001-B

Page 54

C002591-B

4. Installation MCA 15 - MCA 25 MCA 25/28 MI

DHW tank on master boiler

A Z E R T Y

Connect the DHW sensor (Package AD212) Master boiler Secondary boiler Secondary boiler Low loss header Cascade outlet sensor

Connect the sensor to the terminal block S SYST on the master boiler.

Settings to be made for this type of installation: Master boiler

Parameters Access Settings to be made See chapter

INSTALLATION

O.DHW:

CASCADE:

MASTER CONTROLLER

SYSTEM NETWORK

(1) The parameter is only displayed if INSTALLATION parameter is set to EXTENDED

(1)

"Installer" level #SYSTEM menu

"Installer" level #NETWORK menu

"Installer" level #SYSTEM menu

(1)

"Installer" level

#SYSTEM menu

EXTENDED

ADD SLAVE

¼ "Displaying the parameters in extended mode", page 71

¼ "Setting the parameters specific to the installation", page 72

¼ "Configuring the network", page 88

Settings to be made for this type of installation: Follower boilers

Parameters Access Settings to be made See chapter

INSTALLATION

CASCADE:

MASTER CONTROLLER

SLAVE NUMBER

(1) The parameter is only displayed if INSTALLATION parameter is set to EXTENDED

(1)

"Installer" level #SYSTEM menu

"Installer" level #NETWORK menu

"Installer" level #SYSTEM menu

"Installer" level

#SYSTEM menu

EXTENDED

OFF

2, 3, ...

¼ "Displaying the parameters in extended mode", page 71

¼ "Configuring the network", page 88

29/04/2010 - 300022146-001-B

Page 55

T001871-H

2 31

X14

X13

X12

X10

X11

HLS

1 2 7 8 9 10

X12

3 4 5 6

1 2 3

GN/ YW

153

X21

1 2 3

PUMP A

GN/ YW

3 1 2

X41

SCU-C

X11

1 2 3 4 5 6

WHGYRD

YWOR

1 2 3

1 3 2

X121

2 3 4 1

GN/ YW

1 23

X22

PWM

PUMP

12 13

1 2

X116

FTSRTS

2 2

X115

X114

10 11

3 1

X112

2 3

1 3

X113

X10

4 5 7 6

X111

1 2 3 4

PSU

2 3 4 5

X91

1 2 4 5

FAN

X117

230V, 50Hz

L N

SCU-C

1 32

GN/ YW

1 23

GN/YW

4 3 2 15

GN/ YW

3 1

4 2

X51

DIS

MCA 15 - MCA 25 MCA 25/28 MI 4. Installation

4.11 Electrical diagram

SCU-C

29/04/2010 - 300022146-001-B

Power supply control panel PCB

On/Off switch

Ignition transformer

Ignition power relay Combined venturi and gas valve

unit

PUMP A

HLS

FAN

RTS

Inverter valve Modulating control on the

boiler pump Safety thermostat

Fan

Flowmeter Return sensor

FTS

PSU

PWM PUMP

DIS

Flow sensor Pressure sensor

Parameter storage for PCBs PCU and SU

Modulation signal from the boiler pump

Display

Page 56

4. Installation MCA 15 - MCA 25 MCA 25/28 MI

4.12 Filling the system

4.12.1. Water treatment

Treat the water in the installation to limit corrosion, calcium and limescale deposits, sludge, microbiological contamination, etc..

CAUTION

An uncleaned installation or an installation using water of unsuitable quality may bring about the cancellation of the warranty.

For an optimum functioning of the boiler, the water of the installation must comply with following characteristics:

Degree of acidity (water non-treated) pH 7 - 9 7 - 9 7 - 9 7 - 9 Degree of acidity (water treated) pH 7 - 8.5 7 - 8.5 7 - 8.5 7 - 8.5 Conductivity at 25°C µS/cm ≤ 800 ≤ 800 ≤ 800 ≤ 800 Chlorides mg/l ≤ 150 ≤ 150 ≤ 150 ≤ 150 Other components mg/l < 1 < 1 < 1 < 1 Water hardness °f 1 - 35 1 - 20 1 - 15 1 - 5

°dH 0.5 - 20.0 0.5 - 11.2 0.5 - 8.4 0.5 - 2.8 mmol/l 0.1 - 3.5 0.1 - 2.0 0.1 - 1.5 0.1 - 0.5

Output (kW)

≤ 70

70 - 200 200 - 550

≥ 550

Recommendations:

4 Reduce the quantity of oxygen in the heating circuit to the

minimum.

4 Limit the annual quantity of water added to the circuit to 5% of the

total water volume in the installation.

4 New installation

- Completely clean the installation of all residues (plastic waste, installation parts, oils, etc.).

- Use an inhibitor in combination with a softener.

4 Existing installation

If the water quality in the installation is insufficient, several options are possible:

- Install one or more filters.

- Completely clean the installation to evacuate any impurities and

deposits in the heating circuit. To do this, a considerable and controlled flow rate is required.

- Clean the boiler (dirt, deposits, calcium, etc.).

De Dietrich Thermique recommends the following products:

Manufacturer

Fernox Restorer Universal cleaner for existing

Product Function

installations Protector protective product Alphi 11 Antifreeze and inhibitor

29/04/2010 - 300022146-001-B

Page 57

MCA 15 - MCA 25 MCA 25/28 MI 4. Installation

Manufacturer Product Function

GE-Water / Betzdearborn Sentinel X100 protective product

Sentinel X200 Limescale remover Sentinel X300 protective product for new

installations Sentinel X400 protective product for existing

installations Sentinel X500 Antifreeze and inhibitor

Other manufacturers propose similar products.

CAUTION

4 Check the compatibility of the product with the

materials used in the installation.

4 Respect the manufacturer's instructions (use, dose,

etc.) to obviate any hazards (corporal, material, environmental).

29/04/2010 - 300022146-001-B

Page 58

T000181-B

T001620-A

T001618-A

T001619-A

2 bar

T001507-A

4. Installation

MCA 15 - MCA 25 MCA 25/28 MI

4.12.2. Filling the system

CAUTION

Before filling, open the valves on every radiator in the installation.

1. Open the cold water inlet and heating outlet valves.

2. Open the disconnector valves (During filling, air can escape from the system via the automatic air vent).

3. Close the disconnector valves when the manometer indicates a pressure of 2 bar

4. Check the tightness of the water connections.

29/04/2010 - 300022146-001-B

Page 59

A000866-A

bar

STD

0 2 4 6 8 10 12 14 16 18 22 2420

AUTO

(

MCA 15 - MCA 25 MCA 25/28 MI 5. Start-up

5 Start-up

5.1 Control panel

5.1.1. Description of the keys

Temperature setting key (heating, DHW, swimming pool) Operating mode selection key DHW override key Key to access the parameters reserved for the installer Keys on which the function varies as and when selections

are made Rotary setting button:

4 Turn the rotary button to scroll through the menus or

modify a value

4 Press the rotary button to access the menu selected

or confirm a value modification

29/04/2010 - 300022146-001-B

Page 60

C002705-A

C002704-A

C002703-A

C002702-A

bar

STD

(

0 2 4 6 8 10 12 14 16 18 22 2420

C002696-A

AUTO

bar

STD

0 2 4 6 8 10 12 14 16 18 22 2420

C002701-B

AUTO

5. Start-up MCA 15 - MCA 25 MCA 25/28 MI

5.1.2. Description of the display

Key functions

> ( '

STD

Access to the various menus Used to scroll through the menus Used to scroll through the parameters The symbol is displayed when help is available Used to display the curve of the parameter selected Reset of all time programmes Selection of comfort mode or selection of the days to be

programmed

Selection of reduced mode or deselection of the days to be programmed

ESC

Back to the previous level Back to the previous level without saving the

modifications made

Flame output level

Manual reset

The whole symbol flashes: The burner starts up but the flame is not yet present

Part of the symbol flashes: Output is increasing

Steady symbol: The required output has been reached

Part of the symbol flashes: Output is dropping

29/04/2010 - 300022146-001-B

Page 61

bar

STD

0 2 4 6 8 10 12 14 16 18 22 2420

C002697-B

AUTO

bar

STD

0 2 4 6 8 10 12 14 16 18 22 2420

C002698-B

AUTO

bar

STD

0 2 4 6 8 10 12 14 16 18 22 2420

C002708-A

AUTO

MCA 15 - MCA 25 MCA 25/28 MI 5. Start-up

Operating modes

AUTO

Summer mode: The heating is off. Domestic hot water continues to be produced

WINTER mode: Heating and domestic hot water working

Operation in automatic mode according to the timer programme

Comfort mode: The symbol is displayed when a DAY override (comfort) is activated

4 Flashing symbol: Temporary override 4 Steady symbol: Permanent override

Reduced mode: The symbol is displayed when a NIGHT override (reduced) is activated

4 Flashing symbol: Temporary override 4 Steady symbol: Permanent override

Holiday mode: The symbol is displayed when a HOLIDAY override (antifreeze) is activated

4 Flashing symbol: Holiday mode programmed 4 Steady symbol: Holiday mode active

System pressure

bar

Manual mode

Pressure indicator: The symbol is displayed when a water pressure sensor is connected

4 Flashing symbol: The quantity of water is insufficient 4 Steady symbol: The quantity of water is sufficient

Water pressure level

4 R : 0,9 to 1,1 bar 4 E : 1,2 to 1,5 bar 4 Z : 1,6 to 1,9 bar 4 A : 2,0 to 2,3 bar 4 l : > 2,4 bar

29/04/2010 - 300022146-001-B

Page 62

bar

STD

0 2 4 6 8 10 12 14 16 18 22 2420

C002707-A

AUTO

bar

STD

0 2 4 6 8 10 12 14 16 18 22 2420

C002699-B

AUTO

bar

STD

(

0 2 4 6 8 10 12 14 16 18 22 2420

AUTO

SUNDAY 11:45

C002219-D-04

5. Start-up MCA 15 - MCA 25 MCA 25/28 MI

Domestic Hot Water override

A bar is displayed when a DHW override is activated:

4 Flashing bar: Temporary override 4 Steady bar: Permanent override

Other information

The symbol is displayed when domestic hot water production is running

Valve indicator: The symbol is displayed when a 3-way valve is connected

4 x : 3-way valve open 4 c : 3-way valve closed

The symbol is displayed when the pump is operating Name of the circuit for which the parameters are displayed

5.1.3. Access to the various browsing levels

"User" level

The information and settings in the "User" level can be accessed by everyone.

Press the > key.

29/04/2010 - 300022146-001-B

Page 63

STD

(

0 2 4 6 8 10 12 14 16 18 22 2420

AUTO

SUNDAY 11:45

TEMP.: 68°

C002235-F-04

bar

STD

(

0 2 4 6 8 10 12 14 16 18 22 2420

AUTO

SUNDAY 11:45

TEMP.: _ _ _ _

C002272-C-04

MCA 15 - MCA 25 MCA 25/28 MI 5. Start-up

"Installer" level

The information and settings in the "Installer" level can be accessed by experienced people.

Press key - for around 5 seconds.

Before the "Installer" level is displayed, the EMISSION MEASUREMENTS menu will be displayed. Hold down the

- key until #LANGUAGE is displayed.

"After Sales" level

The information and settings in the "After Sales" level can be accessed by initiates.

Press key - for around 10 seconds.

Before the "After Sales" level is displayed, the "Installer" level will be displayed. Hold key - down until #PARAMETERS is displayed.

29/04/2010 - 300022146-001-B

Page 64

bar

STD

(

0 2 4 6 8 10 12 14 16 18 22 2420

AUTO

#MEASURES

#CHOICE TIME PROG.

#TIME PROGRAM #SETTING #TIME .DAY

C002220-A-04

bar

STD

(

0 2 4 6 8 10 12 14 16 18 22 2420

AUTO

CURRENT PROG.B

CURRENT PROG.C

C002221-B-04

bar

STD

(

0 2 4 6 8 10 12 14 16 18 22 2420

AUTO

CURRENT PROG.C

"Choice of the timeprogram applied C"

C002222-B-04

bar

STD

(

0 2 4 6 8 10 12 14 16 18 22 2420

AUTO

LUNDI 11:45

C002224-D-04

5. Start-up MCA 15 - MCA 25 MCA 25/28 MI

5.1.4. Browsing in the menus

1. To select the desired menu, turn the rotary button.

2. To access the menu, press the rotary button. To go back to the previous display, press the key j.

3. To select the desired parameter, turn the rotary button.

4. To modify the parameter, press the rotary button. To go back to the previous display, press the key j.

5. To modify the parameter, turn the rotary button.

6. To confirm, press the rotary button.

To cancel, press key h.

To go back to the main display, press key j2 times.

It is possible to use the ( and ' keys instead of the rotary button.

29/04/2010 - 300022146-001-B

Page 65

MCA 15 - MCA 25 MCA 25/28 MI 5. Start-up

5.2 Check points before commissioning

5.2.1. Preparing the boiler for commissioning

WARNING

Do not put the boiler into operation if the supplied gas is not in accordance with the approved gas types.

Preparatory procedure for boiler commissioning:

4 Check that the gas type supplied matches the data shown on the

boiler's data plate.

4 Check the gas circuit. 4 Check the hydraulic circuit. 4 Check the water pressure in the heating system. 4 Check the electrical connections to the thermostat and the other

external controls.

4 Check the other connections. 4 Test the boiler at full load. Check the setting of the gas/air ratio

and, if necessary, correct it.

4 Test the boiler at part load. Check the setting of the gas/air ratio

and, if necessary, correct it.

4 Finalizing work.

29/04/2010 - 300022146-001-B

Page 66

T001518-B

5. Start-up

MCA 15 - MCA 25 MCA 25/28 MI

5.2.2. Gas circuit

WARNING

Ensure that the boiler is switched off.

1. Open the main gas supply.

2. Unscrew the two screws located under the front panel by a quarter turn and remove the panel.

3. Tilt the control box forwards by opening the holding clips located at the sides.

4. Check the gas supply pressure at the measurement point C on the gas valve unit.

WARNING

¼ To ascertain the gas types permitted, see chapter: "Gas categories", page 8

5. Check the tightness of the gas connections made after the gas valve unit in the boiler.

6. Check the leak tightness of the gas inlet, including the gas valves. The test pressure must not exceed 60 mbar.

7. Purge the gas supply pipe within the boiler by unscrewing the measurement point on the gas block. Tighten the measurement point when the pipe has been sufficiently purged.

8. Check the tightness of the gas connections in the boiler.

5.2.3. Hydraulic circuit

4 Check the condensate discharge siphon; it must be filled with

clean water up to the mark.

4 Check that there are no leaks on the hydraulic connections.

5.2.4. Electrical connections

4 Check the electrical connections.

29/04/2010 - 300022146-001-B

Page 67

C002366-B

Français - Deutsch - English Italiano - Espanol - Nederlands

- Pycck - Polski - Türk -

bar

STD

(

0 2 4 6 8 10 12 14 16 18 22 2420

LANGUE FRANCAIS

C002286-C

MCA 15 - MCA 25 MCA 25/28 MI 5. Start-up

5.3 Putting the appliance into operation

1. Tilt the control box upwards again and fasten it using the clips located at the sides.

2. Open the main gas supply.

3. Open the gas valve on the boiler.

4. Turn on the boiler using the on/off switch.

5. The first time the boiler is powered up, the #LANGUAGE menu is displayed. Select the desired language by turning the rotary button.

6. To confirm, press the rotary button.

The boiler will begin an automatic venting-programme (which lasts approx. 3 minutes) and will do this every time the power supply is isolated.

Error during the start-up procedure:

4 No information is shown on the display:

- Check the mains supply voltage

- Check the fuses

- Check the connection of the power cable to the connector X1

on the PCU PCB

4 If there is a problem, the error is displayed on the screen.

¼ See chapter: "Messages (Code type Bxx or Mxx)", page 112

If a DHW sensor is connected and the anti-legionella function is activated, the boiler starts to heat the water in the DHW tank as soon as the vent programme has been completed. The heating time depends on the size of the DHW installation.

29/04/2010 - 300022146-001-B

Page 68

5. Start-up MCA 15 - MCA 25 MCA 25/28 MI

5.4 Gas settings

5.4.1. Adapting to another gas type

WARNING

Only a qualified engineer may carry out the following operations.

The boiler is preset in the factory to operate on natural gas H (G20).

For operation on another group of gases, carry out the following operations:

4 Set the air/gas ratio.

¼ "Setting the air/gas ratio (Full load)", page 67 ¼ "Setting the air/gas ratio (Part load)", page 69

4 Set the fan speed using the parameters MIN.VENT.,

MAX.VENT.BOIL, MAX.VENT.DHW and START SP.:

¼ See chapter: ""Professional" settings", page 82

29/04/2010 - 300022146-001-B

Page 69

T001581-A

STD

(

0 2 4 6 8 10 12 14 16 18 22 2420

AUTO

SUNDAY 11:45

TEMP.: 68°

C002271-F-04

bar

STD

(

0 2 4 6 8 10 12 14 16 18 22 2420

AUTO

EMISSION MESURMENTS

GENERATOR : GENE

C002346-D-04

bar

STD

(

0 2 4 6 8 10 12 14 16 18 22 2420

AUTO

GENE :

BOILER TEMP.

CURRENT

FAILURE

PMAX

68°C

10µA

5600 tr/min

C002347-D-04

OFF => PMAX

MCA 15 - MCA 25 MCA 25/28 MI 5. Start-up

5.4.2. Setting the air/gas ratio (Full load)

1. Unscrew the plug of the flue gas measurement point.

2. Connect the flue gas analyser.

WARNING

Ensure that the opening around the sensor is completely sealed when taking measurements.

In the main display, press key -. The menu EMISSION MEASUREMENTS is displayed on the screen.

If an automatic vent cycle is running, it is not possible to perform these operations.

4. Select the generator desired. The characteristics of the generator are displayed.

5. Turn the rotary button until PMAX is displayed. The full load is set.

6. Measure the percentage of O2 or CO2 in the flue gases (Front panel removed) .

29/04/2010 - 300022146-001-B

Page 70

T000932-A

5. Start-up MCA 15 - MCA 25 MCA 25/28 MI

7. If this rate does not match the required value, correct the gas/air ratio using the adjustment screw A on the gas valve unit.

8. Check the flame through the flame viewport.

The flame must not be detached.

O2/CO2 control and setting values for gas H (G20) at full load

Boiler type Setting value Checking value

O2 (%) CO2 (%) O2 (%) CO2 (%)

MCA 15 5,2 ± 0,4 8,8 ± 0,2 5,2 ± 0,5 8,8 ± 0,3 MCA 25 5,2 ± 0,4 8,8 ± 0,2 5,2 ± 0,5 8,8 ± 0,3 MCA 25/28 MI 5,2 ± 0,4 8,8 ± 0,2 5,2 ± 0,5 8,8 ± 0,3

O2/CO2 control and setting values for gas L (G25) at full load

Boiler type Setting value Checking value

O2 (%) CO2 (%) O2 (%) CO2 (%)

MCA 15 4,9 ± 0,4 8,8 ± 0,2 4,9 ± 0,5 8,8 ± 0,3 MCA 25 4,9 ± 0,4 8,8 ± 0,2 4,9 ± 0,5 8,8 ± 0,3 MCA 25/28 MI 4,9 ± 0,4 8,8 ± 0,2 4,9 ± 0,5 8,8 ± 0,3

O2/CO2 control and setting values for propane (G31) at full load Diameter allowed for the gas diaphragm (x.xx)

Boiler type Setting value Checking value Fit the gas restrictor in the gas block

O2 (%) CO2 (%) O2 (%) CO2 (%) Ø mm

MCA 15 5,2 ± 0,3 10,3 ± 0,2 5,2 ± 0,5 10,3 ± 0,3 3,00 MCA 25 5,2 ± 0,3 10,3 ± 0,2 5,2 ± 0,5 10,3 ± 0,3 4,00 MCA 25/28 MI 5,2 ± 0,3 10,3 ± 0,2 5,2 ± 0,5 10,3 ± 0,3 4,00

29/04/2010 - 300022146-001-B

Page 71

T001581-A

STD

(

0 2 4 6 8 10 12 14 16 18 22 2420

AUTO

SUNDAY 11:45

TEMP.: 68°

C002271-F-04

bar

STD

(

0 2 4 6 8 10 12 14 16 18 22 2420

AUTO

EMISSION MESURMENTS

GENERATOR : GENE

C002346-D-04

bar

STD

(

0 2 4 6 8 10 12 14 16 18 22 2420

AUTO

GENE :

BOILER TEMP.

CURRENT

FAILURE

PMAX

68°C

10µA

5600 tr/min

C002347-D-04

OFF => PMAX

MCA 15 - MCA 25 MCA 25/28 MI

5.4.3. Setting the air/gas ratio (Part load)

1. Unscrew the plug of the flue gas measurement point.

2. Connect the flue gas analyser.

WARNING

Ensure that the opening around the sensor is completely sealed when taking measurements.

In the main display, press key -. The menu EMISSION MEASUREMENTS is displayed on the screen.

If an automatic vent cycle is running, it is not possible to perform these operations.

5. Start-up

4. Select the generator desired. The characteristics of the generator are displayed.

5. Turn the rotary button until PMIN is displayed. The part load is set.

If an automatic vent cycle is running, it is not possible to perform these operations.

6. Measure the percentage of O2 or CO2 in the flue gases (Front panel removed) .

29/04/2010 - 300022146-001-B

Page 72

T000933-B

5. Start-up

7. If this rate does not match the required value, correct the gas/air ratio using the adjustment screw B on the gas valve unit.

4 Turn the screw B anticlockwise to obtain a lower

4 Turn the screw B clockwise to obtain a higher CO

8. Check the flame through the flame viewport.

The flame must be stable and blue in colour with orange particles around the edge of the burner.

O2/CO2 control and setting values for gas H (G20) at low speed

Boiler type Setting value Checking value

O2 (%) CO2 (%) O2 (%) CO2 (%)

MCA 15 5,9 ± 0,4 8,4 ± 0,2 5,9 ± 0,4 8,4 ± 0,2 MCA 25 5,9 ± 0,4 8,4 ± 0,2 5,9 ± 0,4 8,4 ± 0,2 MCA 25/28 MI 5,9 ± 0,4 8,4 ± 0,2 5,9 ± 0,4 8,4 ± 0,2

MCA 15 - MCA 25 MCA 25/28 MI

CO2 value.

value.

O2/CO2 control and setting values for gas L (G25) at low speed

Boiler type Setting value Checking value

O2 (%) CO2 (%) O2 (%) CO2 (%)

MCA 15 5,6 ± 0,4 8,4 ± 0,2 5,6 ± 0,4 8,4 ± 0,2 MCA 25 5,6 ± 0,4 8,4 ± 0,2 5,6 ± 0,4 8,4 ± 0,2 MCA 25/28 MI 5,6 ± 0,4 8,4 ± 0,2 5,6 ± 0,4 8,4 ± 0,2

O2/CO2 control and setting values for propane (G31) at low speed

Boiler type Setting value Checking value

O2 (%) CO2 (%) O2 (%) CO2 (%)

MCA 15 5,8 ± 0,3 9,9 ± 0,2 5,8 ± 0,3 9,9 ± 0,2 MCA 25 5,8 ± 0,3 9,9 ± 0,2 5,8 ± 0,3 9,9 ± 0,2 MCA 25/28 MI 5,8 ± 0,3 9,9 ± 0,2 5,8 ± 0,3 9,9 ± 0,2

Repeat the high speed test and the low speed test as often as necessary until the correct values are obtained without having to make additional adjustments.

To exit the mode EMISSION MEASUREMENTS, press j several times.

29/04/2010 - 300022146-001-B

Page 73

T001985-A

10 11

STD

(

0 2 4 6 8 10 12 14 16 18 22 2420

AUTO

SUNDAY 11:45

TEMP.: 68°

C002235-F-04

MCA 15 - MCA 25 MCA 25/28 MI

5. Start-up

5.4.4. Basic setting for the gas/air ratio

If the gas/air ratio is out of adjustment, the gas valve unit has a basic setting. To do this, proceed as follows:

1. Switch off the boiler electrical power supply.

2. Close the gas valve on the boiler.

3. Remove the air inlet flue on the venturi.

4. Unscrew the top connection on the gas valve unit.

5. Disconnect the connector located under the fan.

6. Release the 2 clips holding the fan/mixing elbow unit in place on the heat exchanger.

7. Completely remove the fan/mixing elbow unit. ¼ For steps 3 to 7 inclusive, see chapter: "Checking the burner

and cleaning the heat exchanger", page 105

8. Turn the setting screw A on the gas valve unit to modify the position of the flow regulation valve.

9. Turn the setting screw B on the gas valve unit anticlockwise until it matches the front panel.

10.Turn the setting screw B on the gas valve unit by 6 turns clockwise.

11.Follow the procedure in reverse to re-assemble all of the components.

5.5 Checks and adjustments after commissioning

5.5.1. Displaying the parameters in extended

mode

The display mode on the control panel is set as standard in such a way as only to show the "conventional" parameters. It is possible to switch to "extended" mode by proceeding as follows:

Access the "installer" level: Press key - for around 5 seconds.

2. Select the menu #SYSTEM.

Turn the rotary button to scroll through the menus or modify a value.

3. Set the parameter INSTALLATION to EXTENDED.

4 Press the rotary button to access the menu selected

or confirm a value modification.

¼ For a detailed explanation of menu browsing, refer to the chapter: "Browsing in the menus", page 62

29/04/2010 - 300022146-001-B

Page 74

STD

(

0 2 4 6 8 10 12 14 16 18 22 2420

AUTO

SUNDAY 11:45

TEMP.: 68°

C002235-F-04

5. Start-up MCA 15 - MCA 25 MCA 25/28 MI

"Installer" level - #SYSTEM menu

Parameter Adjustment range Description Factory setting Customer setting

INSTALLATION CLASSIC

Displays the parameters of a conventional

CLASSIC

installation

EXTENDED

Displays all parameters

Regardless of what is done to the keys, the regulator switches back to CLASSIC mode after 30 minutes.

5.5.2. Setting the parameters specific to the

installation

Access the "installer" level: Press key - for around 5 seconds.

2. Select the menu #SYSTEM.

4 Turn the rotary button to scroll through the menus or

modify a value.

4 Press the rotary button to access the menu selected

or confirm a value modification.

¼ For a detailed explanation of menu browsing, refer to the chapter: "Browsing in the menus", page 62

3. Set the following parameters according to the connections made to the PCBs:

"Installer" level - #SYSTEM menu

Parameter Adjustment range Description Factory setting Customer

setting

(1)(2)

CIRC. A:

DIRECT

PROGRAM.

H.TEMP

Use as a direct heating circuit Use as an independent programmable outlet Enables operation of circuit A in summer despite

manual or automatic summer shutdown

DHW

DHW ELEC

Connection of a second domestic hot water tank Used to control the electrical resistor according to the

timer programme on circuit A in summer mode

CIRC. B:

(1)

DISAB.

3WV

No data for circuit A is displayed Connecting a circuit with 3-way valve (For example:

Underfloor heating)

CIRC. C:

(1)

SWIM.P.

DIRECT

3WV

Using the circuit for pool management Use of circuit in direct heating circuit Connecting a circuit with 3-way valve (For example:

Underfloor heating)

SWIM.P.

DIRECT

(1) The parameter is only displayed if INSTALLATION parameter is set to EXTENDED (2) If the pump incorporated in the boiler is used for circuit A (parameter CIRC.A set to DIRECT), the O.PUMP A outlet is free (3) This parameter is displayed only if the O.PUMP A parameter is set to CIRC.AUX or if the 3-way valve PCB option is used

Using the circuit for pool management Use of circuit in direct heating circuit

DIRECT

3WV

29/04/2010 - 300022146-001-B

Page 75

MCA 15 - MCA 25 MCA 25/28 MI 5. Start-up

"Installer" level - #SYSTEM menu

Parameter Adjustment range Description Factory setting Customer

setting

O.PUMP A

(2)

CH.PUMP A

CIRC.AUX

Heating pump circuit A: The PUMP A outlet is used to control the pump on circuit A

Used to resume the functions of the S.AUX parameter

CH.PUMP A

(1)

without adding the "PCB + sensor" option (Package AD249)

DHW LOOP

Used to control the domestic hot water looping pump according to the DHW timer programme and force its operation during an override

PRIMARY PUMP

The outlet PUMP A is active if a heating demand is present on the secondary pump

ORDER BURNER

The outlet PUMP A is active when a burner demand is present

O.DHW:

S.AUX:

(1)

(1)(3)

FAILURE

PUMP

DHW LOOP

PROGRAM.

PRIMARY PUMP

The outlet PUMP A is active if an error is detected Using a tank load pump on the DHW PUMP outlet Use of a reversal valve for DHW production Use as a domestic loop pump Use as an independent programmable outlet The outlet AUX PUMP is active if a heating demand

DHW LOOP

is present on the secondary pump

ORDER BURNER

The outlet AUX PUMP is active when a burner demand is present

DHW

FAILURE

DHW ELEC

Use of primary circuit of second DHW tank The outlet AUX PUMP is active if an error is detected Used to control the electrical resistor according to the

timer programme on circuit AUX in summer mode

I.SYST

(1)

SYSTEM

The inlet sensor is used to connect the common flow

SYSTEM

sensor of a cascade system

STORAGE TANK

DHW STRAT

ST.TANK+DHW

Hot water storage tank affected to heating only Using the DHW tank with 2 sensors (top and bottom) Hot water storage tank affected to heating and

domestic hot water

O. TEL:

FAILURE

REVISION

The telephone outlet is closed in the event of failure The telephone outlet is closed in the event of revision

FAILURE

(1)

display

DEF+REV

The telephone outlet is closed in the event of failure or revision display

CT.TEL

See table below.

(1)

OPEN

29/04/2010 - 300022146-001-B

Page 76

5. Start-up MCA 15 - MCA 25 MCA 25/28 MI

"Installer" level - #SYSTEM menu

Parameter Adjustment range Description Factory setting Customer

setting

I.TEL:

(1)

ANTIFR

0/1 A

Start anti-freeze in boiler command ON or OFF contact: I.TEL: can be used as an

ANTIFR

antifreeze activation inlet on circuit A

0/1 B

ON or OFF contact: I.TEL: can be used as an antifreeze activation inlet on circuit B

0/1 C

ON or OFF contact: I.TEL: can be used as an antifreeze activation inlet on circuit C

0/1 DHW

ON or OFF contact: I.TEL: can be used as an antifreeze activation inlet on circuit ECS

0/1 AUX

ON or OFF contact: I.TEL: can be used as an antifreeze activation inlet on circuit AUX (S.AUX if option *1 is present or outlet O.PUMP A is configured as CIRC.AUX) When I.TEL: is not active, the auxiliary circuit (AUX) follows the maximum boiler temperature (parameter BOILER MAX).

Influence of the parameter setting CT.TEL on the I.TEL contact

CT.TEL I.TEL: I.TEL contact closed I.TEL contact open

CLOSE ANTIFR

0/1 A

The antifreeze mode is active on all boiler circuits. The mode selected on the boiler is active. The mode selected on the circuit is active. The antifreeze mode is active on the circuit

concerned.

0/1 B

The mode selected on the circuit is active. The antifreeze mode is active on the circuit

concerned.

0/1 C

The mode selected on the circuit is active. The antifreeze mode is active on the circuit

concerned.

0/1 DHW

0/1 AUX

OPEN ANTIFR

0/1 A

The mode selected on the DHW circuit is active. The antifreeze mode is active for the DHW circuit.

4 The MAUX outlet on the connection terminal

block is active.

4 The boiler operates at a set point temperature

equal to BOILER MAX.

4 The MAUX outlet on the connection terminal

block is not active.

4 The boiler operates with a set point temperature

as a function of the outside temperature.

The mode selected on the boiler is active. The antifreeze mode is active on all boiler circuits. The antifreeze mode is active on the circuit

The mode selected on the circuit is active.

concerned.

0/1 B

The antifreeze mode is active on the circuit

The mode selected on the circuit is active.

concerned.

0/1 C

The antifreeze mode is active on the circuit

The mode selected on the circuit is active.

concerned.

0/1 DHW

0/1 AUX

The antifreeze mode is active for the DHW circuit. The mode selected on the DHW circuit is active.

4 The MAUX outlet on the connection terminal

block is not active.

4 The boiler operates with a set point temperature

as a function of the outside temperature.

4 The MAUX outlet on the connection terminal

block is active.

4 The boiler operates at a set point temperature

equal to BOILER MAX.

29/04/2010 - 300022146-001-B

Page 77

STD

(

0 2 4 6 8 10 12 14 16 18 22 2420

AUTO

SUNDAY 11:45

TEMP.: 68°

C002235-F-04

bar

STD

(

0 2 4 6 8 10 12 14 16 18 22 2420

AUTO

CIRC.B I

"Personalize the nameof this circuit B"

E F G H

. .

C002344-C-04

bar

STD

(

0 2 4 6 8 10 12 14 16 18 22 2420

AUTO

CIRC.B INPUT

"Personalize the nameof this circuit B"

X Y Z

. . .

C002345-C-04

MCA 15 - MCA 25 MCA 25/28 MI 5. Start-up

5.5.3. Naming the circuits and generators

Access the "installer" level: Press key - for around 5 seconds.

2. Select the menu #NAMES OF THE CIRCUITS.

4 Turn the rotary button to scroll through the menus or

modify a value.

4 Press the rotary button to access the menu selected

or confirm a value modification.

¼ For a detailed explanation of menu browsing, refer to the chapter: "Browsing in the menus", page 62

3. Select the circuit or generator you wish to rename.

"Installer" level - #NAMES OF THE CIRCUITS menu

Parameter Description Name given by the customer

CIRC. A:

CIRC. B:

CIRC. C:

CIRC.AUX

CIRC.DHW

GENE

Circuit A Circuit B Circuit C Auxiliary circuit Domestic hot water circuit Generator

29/04/2010 - 300022146-001-B

4. Turn the rotary button to choose the first character from the list. To confirm, press the rotary button.

5. Then press again to enter a second character or turn the rotary button to leave an empty space.

6. Choose the other characters in the same way. The input zone may contain up to 7 characters.

To move from one character to another, turn the rotary button. To exit without modifications, press key h.

7. To confirm the name, press the rotary button and then turn the button slightly anti-clockwise. When the symbol U appears, press

the rotary button. The name is confirmed.

If the name reaches 7 characters, it is automatically confirmed when the last character is confirmed.

Page 78

STD

(

0 2 4 6 8 10 12 14 16 18 22 2420

AUTO

SUNDAY 11:45

TEMP.: 68°

C002235-F-04

bar

STD

(

0 2 4 6 8 10 12 14 16 18 22 2420

AUTO

BUILD.INERTIA

CIRC.CURVE B

CIRC.CURVE C

SCREED DRYING

2.0

0.7 No

C002316-D-04

bar

STD

(

0 2 4 6 8 10 12 14 16 18 22 2420

AUTO

CIRC.CURVE B

"Slope of the heatcurve of the circuit B"

2.0

C002317-D-04

bar

STD

(

0 2 4 6 8 10 12 14 16 18 22 2420

AUTO

75 64

020 -15

C002318-B-04

0,7

0.7

5. Start-up MCA 15 - MCA 25 MCA 25/28 MI

5.5.4. Setting the heating curve

If an outside temperature sensor is connected, it is possible to adapt the heating curve.

Access the "installer" level: Press key - for around 5 seconds.

2. Select the menu #SECONDARY INSTAL.P.

4 Turn the rotary button to scroll through the menus or

modify a value.

4 Press the rotary button to access the menu selected

or confirm a value modification.

¼ For a detailed explanation of menu browsing, refer to the chapter: "Browsing in the menus", page 62

3. Select the parameter HEAT.CURV. ....

4. To modify the value directly, turn the rotary button. To modify the value by displaying the curve, press key f.

5. To modify the curve, turn the rotary button.

6. To confirm, press the rotary button. To cancel, press key h.

0.7 = Heating curve set

29/04/2010 - 300022146-001-B

Page 79

20 0 -16

C°

1.5

C002319-B

20 0 -15

C°

0.7

C002320-B

MCA 15 - MCA 25 MCA 25/28 MI 5. Start-up

Heating curve without BCT

The BCT (Base heat Curve Temperature) allows a minimum operating temperature to be imposed on the heating circuit (this temperature may be constant if the circuit gradient is nil).

A Z

E R

Heating curve with BCT

The BCT (Base heat Curve Temperature) allows a minimum operating temperature to be imposed on the heating circuit (this temperature may be constant if the circuit gradient is nil).

A Z

Maximum temperature of the circuit Water temperature in the circuit for an outside

temperature of 0°C DAY set point on the circuit

Outside temperature for which the maximum water temperature in the circuit is reached

Value of the heating curve This value corresponds to the parameter HEAT.CURV.

¼ See chapter: ""Professional" settings", page 82.

When you modify the heating curve, Z and T are recalculated and repositioned automatically.

Maximum temperature of the circuit Water temperature in the circuit for an outside

temperature of 0°C

E R

DAY set point on the circuit

Outside temperature for which the maximum water temperature in the circuit is reached

Value of the heating curve This value corresponds to the parameter HEAT.CURV.

¼ See chapter: ""Professional" settings", page 82. Value set to the parameter HCZP D

When you modify the heating curve, Z and T are recalculated and repositioned automatically.

29/04/2010 - 300022146-001-B

Page 80

T001522-A

bar

STD

(

0 2 4 6 8 10 12 14 16 18 22 2420

AUTO

SUNDAY 11:45

C002219-D-04

5. Start-up MCA 15 - MCA 25 MCA 25/28 MI

5.5.5. Finalizing work

1. Remove the measuring equipment.

2. Put the flue gas sampling plug back in place.

3. Refit the front panel. Tighten the two screws by a quarter turn.

4. Raise the temperature in the heating system to approximately 70°C.

5. Shut down the boiler.

6. After about 10 minutes, vent the air in the heating system.

7. Checking the hydraulic pressure. If necessary, top up the water level in the heating system (recommended hydraulic pressure between 1,5 and 2 bar).

8. Tick the gas category used on the data plate.

9. Complete the checklist.

10.Explain the operation of the installation, the boiler and the regulator to the users.

11.Inform the user of the periodicity of maintenance work to be carried out. Input the service date and the contact details of the installer.

¼ See chapter: "Customising maintenance", page 99.

12.Give all the instruction manuals to the user.

Commissioning of the boiler is now complete.

5.6 Reading out measured values

The various values measured by the appliance are displayed in the #MEASURES menu.

To access "user" level: Press the > key.

2. To select the #MEASURES menu.

The various boiler parameters are preset in the factory. These factory settings are suitable for the most common heating systems. For other systems and situations, the parameters can be modified.

Turn the rotary button to scroll through the menus or modify a value.

4 Press the rotary button to access the menu selected

or confirm a value modification.

¼ For a detailed explanation of menu browsing, refer to the chapter: "Browsing in the menus", page 62.

"User" level - #MEASURES menu

Parameter Description Unit

OUTSIDE TEMP. ROOMTEMP. A ROOMTEMP. B ROOMTEMP. C

(1) The parameter is only displayed for the options, circuits or sensors actually connected. (2) The parameter is only displayed if INSTALLATION parameter is set to EXTENDED.

Outside temperature °C

(1)

Room temperature of circuit A °C

(1)

Room temperature of circuit B °C

(1)

Room temperature of circuit C °C

29/04/2010 - 300022146-001-B

Page 81

MCA 15 - MCA 25 MCA 25/28 MI

"User" level - #MEASURES menu

Parameter Description Unit

BOILER TEMP.

PRESSURE WATER TEMP.

STOR.TANK.TEMP

(1)

SWIMMING P.T.B SWIMMING P.T.C OUTLET TEMP. B

(2)

OUTLET TEMP. C

(2)

SYSTEM TEMP. T.DHW BOTTOM TEMP.TANK AUX

(2)

DHW A TEMP. BACK TEMP WIND SPEED POWER

(1)(2)

(2)

CURRENT (µA) NB IMPULS.

(2)

Water temperature in the boiler °C Water pressure in the installation bar

(1)

Water temperature in the DHW tank °C Water temperature in the storage tank °C

(1)

Water temperature of the swimming pool on circuit B °C

(1)

Water temperature of the swimming pool on circuit C °C

(1)

Temperature of the flow water in circuit B °C

(1)

Temperature of the flow water in circuit C °C

(1)(2)

Temperature of the system flow water if multi-generator °C

(2)

Water temperature in the bottom of the DHW tank °C

(1)

Water temperature in the second DHW tank connected to the AUX circuit °C

Water temperature in the second DHW tank connected to circuit A °C Temperature of the boiler return water °C Fan rotation speed rpm Instantaneous boiler output (0%: Burner off or running at minimum output) %

(2)

Ionization current µA Number of burner start-ups (not restartable)

The meter is incremented by 8 every 8 start-ups

RUNTIME

(2)

Number of burner operation hours (not restartable)

The meter is incremented by 2 every 2 hours

IN 0-10V CTRL

(1) The parameter is only displayed for the options, circuits or sensors actually connected. (2) The parameter is only displayed if INSTALLATION parameter is set to EXTENDED.

(1)(2)

(2)

Voltage at input 0-10 V V Software control number

5. Start-up

5.7 Changing the settings

29/04/2010 - 300022146-001-B

The boiler control panel is set for the most common heating systems. With these settings, practically all heating systems operate correctly. The user or installer can optimise the parameters according to own preferences.

¼ For the "user" settings, refer to the user instructions.

Page 82

STD

(

0 2 4 6 8 10 12 14 16 18 22 2420

AUTO

SUNDAY 11:45

TEMP.: 68°

C002235-F-04

bar

STD

(

0 2 4 6 8 10 12 14 16 18 22 2420

AUTO

SUNDAY 11:45

C002219-D-04

5. Start-up

MCA 15 - MCA 25 MCA 25/28 MI

5.7.1. Language selection

Access the "installer" level: Press key - for around 5 seconds.

2. Select the menu #LANGUAGE.

4 Turn the rotary button to scroll through the menus or

modify a value.

4 Press the rotary button to access the menu selected

or confirm a value modification.

¼ For a detailed explanation of menu browsing, refer to the chapter: "Browsing in the menus", page 62

"Installer" level - #LANGUAGE menu

Adjustment range Description Factory setting

FRANCAIS Display in French FRANCAIS DEUTSCH Display in German ENGLISH Display in English ITALIANO Display in Italian ESPANOL Display in Spanish NEDERLANDS Display in Dutch PУCCKИЙ Display in Russian POLSKY Display in Polish TÜRK Display in Turkish

5.7.2. Calibrating the sensors

To access "user" level: Press the > key.

2. To select the #SETTING menu.

Turn the rotary button to scroll through the menus or modify a value.

4 Press the rotary button to access the menu selected

or confirm a value modification.

¼ For a detailed explanation of menu browsing, refer to the chapter: "Browsing in the menus", page 62

3. To set the following parameters:

29/04/2010 - 300022146-001-B

Page 83

MCA 15 - MCA 25 MCA 25/28 MI 5. Start-up

"User" level - #SETTING menu

Parameter Adjustment

Description Factory setting Customer

range

SUM/WIN 15 to 30 °C Used to set the outside temperature above

which heating will be shut down.

4 The heating pumps are shut down. 4 The burner will only start for domestic hot

water needs.

4 The letter E and the symbol p are

displayed.

CALIBR. OUT

Heating is never shut down automatically Outside sensor calibration: Used to correct the

outside temperature

CALIBR. ROOM A

(1)

Calibration of the room sensor on circuit A: Is used to set a room offset Make this setting 2 hours after switching on, when the room temperature has stabilised

OFFSET ROOM A

(2)

-5.0 to +5.0 °C Room offset on circuit A: Is used to set a room offset Make this setting 2 hours after switching on, when the room temperature has stabilised

ANTIFR. ROOM A 0.5 to 20 °C Room temperature antifreeze activation on

circuit A

CALIBR. ROOM B

(1)(3)

Calibration of the room sensor on circuit B: Is used to set a room offset Make this setting 2 hours after switching on, when the room temperature has stabilised

OFFSET ROOM B

(2)(3)

-5.0 to +5.0 °C Room offset on circuit B: Is used to set a room offset Make this setting 2 hours after switching on, when the room temperature has stabilised

ANTIFR. ROOM B

(3)

CALIBR. ROOM C

(1)(3)

0.5 to 20 °C Room temperature at which the antifreeze mode is activated on circuit B

Calibration of the room sensor on circuit C: Is used to set a room offset Make this setting 2 hours after switching on, when the room temperature has stabilised

OFFSET ROOM C

(2)(3)

-5.0 to +5.0 °C Room offset on circuit C: Is used to set a room offset Make this setting 2 hours after switching on, when the room temperature has stabilised

ANTIFR. ROOM C

(3)

(1) The parameter is only displayed if a room sensor is connected to the circuit concerned (2) The parameter is only displayed if no room sensors are connected to the circuit concerned (3) The parameter is only displayed if the circuit concerned is actually connected

0.5 to 20 °C Room temperature antifreeze activation on circuit C

22 °C

Outside temperature

Room temperature of circuit A

0.0

6 °C

Room temperature of circuit B

0.0

6 °C

Room temperature of circuit C

0.0

6 °C

setting

29/04/2010 - 300022146-001-B

Page 84

STD

(

0 2 4 6 8 10 12 14 16 18 22 2420

AUTO

SUNDAY 11:45

TEMP.: 68°

C002235-F-04

5. Start-up MCA 15 - MCA 25 MCA 25/28 MI

5.7.3. "Professional" settings

Access the "installer" level: Press key - for around 5 seconds.

2. To set the following parameters:

4 Turn the rotary button to scroll through the menus or

modify a value.

4 Press the rotary button to access the menu selected

or confirm a value modification.

¼ For a detailed explanation of menu browsing, refer to the chapter: "Browsing in the menus", page 62

"Installer" level - #PRIMARY LIMITS menu

Parameter Adjustment range Description Factory setting Customer setting

BOILER MAX MAX.R.HEAT(%) MAX.DHW(%) MIN.VENT.

(1)

MAX.VENT.BOIL MAX.VENT.DHW

START SP.

(1)

MAX.PUMP SPEED

(1)

MIN.PUMP SPEED

(1)

(1) The parameter is only displayed if INSTALLATION parameter is set to EXTENDED (2) The parameter is only displayed if P.DHW is set to PUMP

20 to 90 °C Maximum boiler temperature 75 °C

(1)

0-100% Maximum boiler output during heating 100%

(1)(2)

0-100% Maximum boiler output in DHW 100% 1000-5000 rpm Minimum fan speed See table below

(1)

1000-7000 rpm Maximum fan speed setting in heating See table below

(1)

1000-7000 rpm Maximum fan speed setting in domestic hot

water

1000-5000 rpm Optimum start-up speed setting See table below 20-100% Maximum pump speed See table below

20-100% Minimum pump speed See table below

See table below

Type of gas used Parameter Unit MCA 15 MCA 25 MCA 25/28 MI

Gas H (G20)

Gas L (G25)

Propane (G31)

MIN.VENT.

MAX.VENT.BOIL

MAX.VENT.DHW

START SP.

MIN.VENT.

MAX.VENT.BOIL

MAX.VENT.DHW

START SP.

MIN.VENT.

MAX.VENT.BOIL

MAX.VENT.DHW

START SP.

rpm 1800 1800 1800 rpm 4500 5600 4600 rpm 4500 5600 6200 rpm 3700 3000 3000 rpm 1800 1800 1800 rpm 4400 5300 4300 rpm 4400 5300 5900 rpm 3700 3000 3000 rpm 2200 1800 1800 rpm 4400 5300 4300 rpm 4400 5300 5900 rpm 3700 3000 3000

29/04/2010 - 300022146-001-B

Page 85

MCA 15 - MCA 25 MCA 25/28 MI 5. Start-up

"Installer" level - #SECONDARY LIMITS menu

Parameter Adjustment range Description Factory setting

MAX.CIRC.A

20 to 95 °C Maximum temperature (Circuit A)

75 °C

See comments below

MAX.CIRC.B

20 to 95 °C Maximum temperature (Circuit B)

50 °C

See comments below

MAX.CIRC.C

20 to 95 °C Maximum temperature (Circuit C)

50 °C

See comments below

OUT.ANTIFREEZE

OFF, -8 to +10 °C Outside temperature at which the installation's antifreeze protection

+3 °C is activated. Below this temperature the pumps are permanently on and the minimum temperatures for each circuit are respected. When NIGHT : STOP is set, the reduced temperature is maintained in each circuit (#SECONDARY INSTAL.P menu).

OFF: Antifreeze protection is not activated

HCZP D A HCZP N A HCZP D B HCZP N B HCZP D C HCZP N C

(1) The parameter is only displayed if INSTALLATION parameter is set to EXTENDED (2) The parameter can be set to the heating curve by pressing key f.

(1)(2)

OFF, 20 to 90 °C Curve base temperature in Daytime mode (Circuit A) OFF, 20 to 90 °C Curve base temperature in Nighttime mode (Circuit A) OFF, 20 to 90 °C Curve base temperature in Daytime mode (Circuit B) OFF, 20 to 90 °C Curve base temperature in Nighttime mode (Circuit B) OFF, 20 to 90 °C Curve base temperature in Daytime mode (Circuit C) OFF, 20 to 90 °C Curve base temperature in Nighttime mode (Circuit C)

OFF

"Installer" level - #PRIMARY INSTAL.P menu

Parameter Adjustment range Description Factory setting Customer setting BURN.MIN.RUN

0 to 180 seconds Setting the burner minimum operation time

30 seconds

(1)(2)

(In heating mode)

TIMER GENE P.

1 to 30 minutes Maximum post-operation duration of the

4 minutes

(2)

generator pump

IN.BL

(2)

STOP HEAT

Configuration of the PCU BL inlet

TOTAL STOP

If the contact is open, the heating is off. If the parameter P.DHW is set to VI, DHW production nevertheless remains functional. Automatic restart when the contact closes.

TOTAL STOP

Configuration of the PCU BL inlet If the contact is open, heating and DHW production are off. Automatic restart when the contact closes.

SAFETY MODE

Configuration of the PCU BL inlet If the contact is open, the boiler goes into safety lockout. The boiler needs to be reset to restart.

(1) The parameter is only displayed if INSTALLATION parameter is set to EXTENDED (2) The parameter can be set to the heating curve by pressing key f

29/04/2010 - 300022146-001-B

Page 86

5. Start-up MCA 15 - MCA 25 MCA 25/28 MI

"Installer" level - #SECONDARY INSTAL.P menu

Parameter Adjustment range Description Factory

setting

BUILD. INERTIA

CIRC.CURVE A

ROOM INFL. A 0 to 10 Influence of room sensor A

CIRC.CURVE B

ROOM INFL. B 0 to 10 Influence of room sensor B

CIRC.CURVE C

ROOM INFL. C 0 to 10 Influence of room sensor C

SCREED DRYING NO, B, C, B+C

START DRYING TEMP

STOP DRYING TEMP

NUMB. DAYS DRY.

NIGHT

IN 0-10V

VMIN/OFF 0-10V

VMAX 0-10V

CONS.MIN 0-10V CONS.MAX 0-10V

BAND WIDTH 4 to 16 K Control unit bandwidth for the 3-way valves.

BOIL/3WV SHIFT 0 to 16 K Minimum temperature difference between

H. PUMP DELAY 0 to 15 minutes Timing of the shutdown of the heating

(1) The parameter is only displayed if INSTALLATION parameter is set to EXTENDED (2) The parameter is only displayed if SCREED DRYING is other than OFF (3) The parameter is only displayed if IN 0-10V is set to ON. (4) If a reversal valve is connected, DHW priority will always be total regardless of the setting.

(1)(3)

(2)

(3)

0 (10 hours) to 10 (50 hours)

0 to 4 Heating curve of the circuit A

0 to 4 Heating curve of the circuit B

0 to 4 Heating curve of the circuit C

(2)

20 to 50 °C Screed drying start temperature 20 °C

(2)

20 to 50 °C Screed drying stop temperature 20 °C 0 to 99

DEC.

STOP

OFF / ON Activating the control at 0-10 V

0 to 10 V Voltage corresponding to the instruction set

10 to 70 °C Instruction minimum set temperature 20 °C 10 to 100 °C Maximum set temperature 80 °C

Characterisation of building's inertia: 0 for a building with low thermal inertia. 3 for a building with normal thermal inertia. 10 for a building with high thermal inertia.

Modification of the factory setting is only useful in exceptional cases.

See comments below

See comments below Drying the floor

See comments below

The lower temperature is maintained (Night mode)

See comments below The boiler is stopped (Night mode)

See comments below

minimum

maximum

Option of increasing the bandwidth if the valves are rapid or of reducing it if they are slow.

the boiler and the valves

pumps. The timing of heating pump shutdown prevents the boiler overheating.

3 (22 hours)

1.5

0.7

DEC.

OFF

0.5 V

9.5 V

12 K

4 K

4 minutes

Customer setting

29/04/2010 - 300022146-001-B

Page 87

M001678-B

MCA 15 - MCA 25 MCA 25/28 MI 5. Start-up

"Installer" level - #SECONDARY INSTAL.P menu

Parameter Adjustment range Description Factory

setting

HW. PUMP DELAY 0 to 15 minutes Timing of the shutdown of the domestic hot

water pump. The timing of the domestic hot water load pump shutdown prevents the boiler and the heating circuits overheating (Only if a load pump is used).

ADAPT ON

OFF

PRIORITY DHW

PRIM.TEMP.DHW

LEG PROTEC

(4)

TOTAL

SLIDING

50 to 90 °C Boiler temperature setting if producing

OFF

DAILY

WEEKLY

Automatic adaptation of the heating curves for each circuit with a room sensor with an influence of >0.

The heating curves can only be modified manually.

Interruption of pool heating and reheating during domestic hot water production.

Domestic hot water production and heating on the valve circuits if the available output is sufficient and the hydraulic connection allows.

Heating and domestic hot water production in parallel if the hydraulic connection allows. a Risk of overheating in the direct circuit.

domestic hot water The "anti legionella" function acts to prevent

the development of legionella in the dhw tank, these bacteria are responsible for legionellosis.

Anti-legionella function not activated The tank is overheated every day from

4:00 o'clock to 5:00 o'clock The tank is overheated every Saturday from

4:00 o'clock to 5:00 o'clock

2 minutes

TOTAL

75 °C

OFF

Customer setting

MAX.CIRC...

CIRC. CURVE ...

Heating curve circuit A, B or C

Outside temperature (°C) Water flow temperature (°C) Maximum temperature of the circuit B - C

29/04/2010 - 300022146-001-B

Page 88

C002768-A

00:00 00:00 00:00

10 9 8 7 6 5 4 3 2 1

C002769-A

00:00 00:00 00:00

5. Start-up MCA 15 - MCA 25 MCA 25/28 MI

SCREED DRYING

Used to force a constant flow temperature or a train to accelerate screed drying on underfloor heating. The setting for these temperatures must follow the screed-layer's recommendations. Activation of this parameter (setting other than OFF) forces the permanent display of SCREED DRYING and deactivates all other control system functions. When floor drying is active on a circuit, all other circuits (e.g. DHW) are shut down. The use of this function is only possible on circuits B and C.

A Z E R T Y

A Z R T Y

STOP DRYING TEMP

START DRYING TEMP

Today

NUMB. DAYS DRY.

Normal regulation (End of drying) Heating temperature setting (°C)

For example

STOP DRYING TEMP: 47 °C

START DRYING TEMP: 20 °C

NUMB. DAYS DRY.

Normal regulation (End of drying) Heating temperature setting (°C)

Every day at midnight (00:00): the set point (START DRYING TEMP) is recalculated and the remaining number of days (NB DAYS DRYING) is decremented.

ROOM S.INFL

Used to adjust the influence of the room sensor on the water temperature for the circuit concerned.

No influence (remote control fitted in a location with no influence)

Slight influence

Average influence (recommended)

Room thermostat type operation

29/04/2010 - 300022146-001-B

Page 89

M001679-A

3 6 2 7 8

MCA 15 - MCA 25 MCA 25/28 MI

5. Start-up

NIGHT

This parameter is displayed if at least one circuit does not include a room sensor.

For circuits without a room sensor:

4 NIGHT :DEC. (Reduced): The reduced temperature is maintained

during reduced periods. The circuit pump operates constantly.

4 NIGHT :STOP (Stop): Heating is shut down during reduced

periods. When installation antifreeze is active, the reduced temperature is maintained during reduced periods.

For circuits with a room sensor:

4 When the room temperature is lower than the room sensor set

point: The reduced temperature is maintained during reduced periods. The circuit pump operates constantly.

4 When the room temperature is higher than the room sensor set

point: Heating is shut down during reduced periods. When installation antifreeze is active, the reduced temperature is maintained during reduced periods.

Function 0-10 V

This function controls the boiler using an external system that includes a 0-10 V output connected to the 0-10 V input. This control imposes an instruction set temperature on the boiler. It will be necessary to ensure that the parameter BOILER MAX is higher than

CONS.MAX 0-10V.

4 CONS.MIN 0-10V

5 CONS.MAX 0-10V

6 VMIN/OFF 0-10V

7 VMAX 0-10V

If the input voltage is less than VMIN/OFF 0-10V, the boiler is off. The boiler temperature setting corresponds strictly to the 0-10 V input. The secondary boiler circuits continue to operate but have no impact on the water temperature in the boiler. If using the 0-10 V input and a secondary boiler circuit, the external regulator providing this 0-10 V power supply must always request a temperature at least equal to the needs of the secondary circuit.

Instruction set outlet temperature (°C) Power input signal (V) - DC 0 V

10 V Voltage at input Boiler temperature

29/04/2010 - 300022146-001-B

Page 90

STD

(

0 2 4 6 8 10 12 14 16 18 22 2420

AUTO

SUNDAY 11:45

TEMP.: 68°

C002235-F-04

5. Start-up MCA 15 - MCA 25 MCA 25/28 MI

5.7.4. Configuring the network

Access the "installer" level: Press key - for around 5 seconds.

2. Select the menu #NETWORK.

4 Turn the rotary button to scroll through the menus or

modify a value.

4 Press the rotary button to access the menu selected

or confirm a value modification.

¼ For a detailed explanation of menu browsing, refer to the chapter: "Browsing in the menus", page 62

3. To set the following parameters:

"Installer" level - #NETWORK menu

(1)

Parameter Adjustment range Description Factory setting Customer setting

CASCADE:

MASTER CONTROLLER

(2)

SYSTEM NETWORK

ON / NO ON: System in cascade ON / NO Configure this control system as master

on the bus

(3)

Specific menu: Enlist generators or VMs

in cascade mode (See following chapter: "Connecting appliances in cascade")

FUNCT

(3)

CLASSIC

Operation in cascade: Successive

CLASSIC

triggering of the various boilers in the cascade according to requirements

PARALLEL

Functioning in parallel cascade: If the outside temperature is lower than the value PARALLEL.CASC, all of the boilers are started up at the same time

PARALLEL CASC.

-10 to 20 °C Outside temperature triggering all stages

10 °C

(4)

in parallel mode

INTER STAGE TIMER

1 to 30 min Time delay for starting up or shutting

4 mn

(2)

down generators.

SLAVE NUMBER

(5)

2 to 10 Set the network address of the

secondary generator

3WW PLC

InOne SCENARIO

Specific menu (Not used) Specific menu: Configure the InOne

scenarios to be managed by the SCU PCB (See following chapter: "Configuring the scenarios")

REMOVE DEVICE

(1) The menu is displayed only if the INSTALLATION parameter is set to EXTENDED (2) The parameter is only displayed if CASCADE is set to YES (3) The parameter is displayed only if MASTER CONTROLER is set to YES (4) The parameter is only displayed if FUNCT is set to PARALLEL (5) The parameter is displayed only if MASTER CONTROLER is set to OFF

Specific menu: see below

29/04/2010 - 300022146-001-B

Page 91

STD

(

0 2 4 6 8 10 12 14 16 18 22 2420

AUTO

CASCADE MASTER CONTROLER

SYSTESYSTEM NETWORK MNETZ

FUNCT INTER STAGE TIMER

ON ON

TRADITIONAL

C002409-B-04

STD

(

0 2 4 6 8 10 12 14 16 18 22 2420

AUTO

NB.NETWORK ELEMENTS

ADD SLAVE ERASE NETWORK

C002410-B-04

STD

(

0 2 4 6 8 10 12 14 16 18 22 2420

AUTO

SKLAVE ADDIEREN

GENE: 2, 5, VM: 29,

C002412-A-04

STD

(

0 2 4 6 8 10 12 14 16 18 22 2420

AUTO

ERASE NETWORK

GENE: 2, 5, VM: 29,

C002413-A-04

MCA 15 - MCA 25 MCA 25/28 MI

5. Start-up

Connecting appliances in cascade

It is possible, in a cascade configuration, to enlist generators and/or VMs as slaves. Proceed as follows:

1. Set CASCADE to YES by pressing the rotary button and then turning and pressing it again to confirm.

2. Select SYSTEM NETWORK and press the rotary button to go to the specific menu.

3. To add a slave appliance to the network, select ADD SLAVE.

4. The screen displayed allows you to choose numbers for the slave boilers to be added to the network. Numbers 2 to 10 are dedicated to the generators and numbers 20 to 39 to the VM. Turn the rotary button to scroll through the numbers and press to confirm the

number chosen. Press j to go back to the previous list.

5. To remove a slave appliance from the network, select ERASE NETWORK.

6. The screen displayed allows you to choose the numbers of the slave boilers to be removed from the network. Turn the rotary button to scroll through the numbers and press to remove the

number chosen. Press j to go back to the previous list.

29/04/2010 - 300022146-001-B

Page 92

STD

(

0 2 4 6 8 10 12 14 16 18 22 2420

AUTO

NB.NETWORK ELEMENTS

GENE: 2, 5, VM: 29,

C002411-B-04

5. Start-up MCA 15 - MCA 25 MCA 25/28 MI

7. Select NUMB.ELEMENTS.NETWORK. This screen summarises the elements in the network recognised by the system. Press j

to go back to the previous list.

29/04/2010 - 300022146-001-B

Page 93

STD

(

0 2 4 6 8 10 12 14 16 18 22 2420

AUTO

INTER STAGE TIMER 3WW PLC

InOne SCENARIO

REMOVE DEVICE

C002414-B-04

(

0 2 4 6 8 10 12 14 16 18 22 2420

AUTO

SCENARIO

"Please choose the scenario to define"

C002415-A-04

(

0 2 4 6 8 10 12 14 16 18 22 2420

AUTO

Configure the scenario

HOLIDAYS ON

C002416-A-04

(

0 2 4 6 8 10 12 14 16 18 22 2420

AUTO

"Integrate the differents InOneactors. Press on the button to finish"

C002417-A-04

MCA 15 - MCA 25 MCA 25/28 MI

5. Start-up

Configuring the scenarios

It is possible to choose a scenario and allocate it to various IOBL units via the carrier current. Proceed as follows:

1. In the menu #NETWORK, select InOne SCENARIO.

2. Choose a number to allocate to the scenario by turning the rotary button; up to 4 scenarios can be saved. To confirm, press the rotary button.

3. Choose the desired scenario by turning the rotary button and then confirm.

Scenarios available

HOLIDAYS ON

HOLIDAYS OFF

OUT.AUX ON

OUT.AUX OFF

DHW DAY

DHW NIGHT

DEFAULT ON

DEFAULT OFF

INPUT TEL.ON

INPUT TEL.OFF

Description

Holiday mode active (all circuits) Holiday mode inactive (all circuits) Aux outlet enabled Aux outlet disabled DHW in day mode DHW in night mode Default active No active default Telephone input active Telephone input not active

4. Enlist the various InOne units that have to abide by the scenario and confirm by pressing the rotary button.

29/04/2010 - 300022146-001-B

Page 94

STD

(

0 2 4 6 8 10 12 14 16 18 22 2420

AUTO

INTER STAGE TIMER 3WW PLC InOne SCENARIO

REMOVE DEVICE

C002419-B-04

(

0 2 4 6 8 10 12 14 16 18 22 2420

AUTO

"Select the InOne device to remove"

MASTER CONTROLER

C002420-B-04

5. Start-up MCA 15 - MCA 25 MCA 25/28 MI

Removing a device

To remove a device, proceed as follows:

1. In the menu #NETWORK, select REMOVE DEVICE.

2. Choose the device to be removed by turning the rotary button and pressing to confirm.

29/04/2010 - 300022146-001-B

Page 95

C002422-B-04

230V

bar

STD

(

0 2 4 6 8 10 12 14 16 18 22 2420

AUTO

"An external devicetries to connect, do you want to authorize it?"

LEARN ? YES

C002421-B

MCA 15 - MCA 25 MCA 25/28 MI

5. Start-up

Controlling the boiler from an IOBL Scenario Switch

It is possible to control the boiler from a scenario switch (the boiler is then considered a slave boiler). Proceed as follows:

1. Remove the cover from the IOBL scenario switch to access the LEARN key.

29/04/2010 - 300022146-001-B

2. Press the LEARN key and the control key used to pilot the scenario. A pairing signal is sent to the boiler by carrier current, which displays the following message on the control panel: "A device is trying to connect, do you want to allow this?"

Page 96

STD

(

0 2 4 6 8 10 12 14 16 18 22 2420

AUTO

LEARN ?

"An external devicetries to connect, do you want to authorize it?"

YES

C002423-A-04

YES

STD

(

0 2 4 6 8 10 12 14 16 18 22 2420

AUTO

CHOICE THE CIRC. B

C002424-B-04

STD

(

0 2 4 6 8 10 12 14 16 18 22 2420

AUTO

FUNCTION :

"Function of the scenario"

HOLIDAYS

C002425-A-04

5. Start-up MCA 15 - MCA 25 MCA 25/28 MI

3. Set the display to YES by turning the rotary button and pressing to confirm.

4. Choose the circuit used to run the scenario by turning the rotary button and pressing to confirm.

CAUTION

If one of the SCU PCBs is not correctly paired, the following message appears: "NB not all of the SCUs are recognised". Start the pairing procedure again.

5. Choose the desired scenario by turning the rotary button and then confirm.

Scenarios available

AUTO

DAY

NIGHT

HOLIDAYS

P1 Programme P1 chosen P2 Programme P2 chosen P3 Programme P3 chosen P4 Programme P4 chosen

Description

Heating according to the time programme Comfort mode Reduced mode Holiday mode

6. Terminate pairing by pressing the LEARN key on the IOBL scenario switch.

29/04/2010 - 300022146-001-B

Page 97

STD

(

0 2 4 6 8 10 12 14 16 18 22 2420

AUTO

REMOVE?

Scene reset

yes

C002426-A-04

STD

(

0 2 4 6 8 10 12 14 16 18 22 2420

AUTO

CONFIRM: "Please close the procedure with LEARN on the scenario switch"

C002427-A-04

MCA 15 - MCA 25 MCA 25/28 MI 5. Start-up

Erasing a scenario from the IOBL Scenario Switch

It is possible to remove a scenario using the IOBL scenario switch. Proceed as follows:

1. Press the LEARN key on the scenario switch, then the control key that pilots the scenario to be erased. A message asking whether you wish to erase the scenario is displayed on the control panel interface.

2. Set the display to YES by turning the rotary button and pressing to confirm.

3. Confirm removal by pressing the LEARN key on the IOBL scenario switch.

29/04/2010 - 300022146-001-B

Page 98

bar

STD

(

0 2 4 6 8 10 12 14 16 18 22 2420

AUTO

MODE

SUNDAY 11:45

C002296-B-04

+ +

STD

(

0 2 4 6 8 10 12 14 16 18 22 2420

AUTO

C002301-C-04

#RESET

GENERATOR : GENE

Français - Deutsch - English Italiano - Espanol - Nederlands

- Pycck - Polski - Türk -

bar

STD

(

0 2 4 6 8 10 12 14 16 18 22 2420

LANGUE FRANCAIS

C002286-C

5. Start-up

MCA 15 - MCA 25 MCA 25/28 MI

5.7.5. Returning to the factory settings

To reset the appliance, proceed as follows:

Press key C, > and j simultaneously for 4 seconds. The menu #RESET is displayed.

2. Select the generator desired.

3. To set the following parameters:

#RESET menu

Choice of generator Parameter Description

GENERATOR RESET TOTAL

EXCEPT PROG.

PROG.

IOBL

SENSOR SCU

ROOM SENSOR

Performs a TOTAL RESET of all parameters Performs a parameter RESET but retains the timer programmes Performs a RESET on the timer programmes but retains the parameters Resets the system's network connections Performs a RESET of the generator sensors connected Performs a RESET of the room sensors connected

After reset (TOTAL RESET and RESET EXCEPT PROG.), the control system goes back to the display of the language choice after a few seconds.

1. Select the desired language by turning the rotary button.

2. To confirm, press the rotary button.

29/04/2010 - 300022146-001-B

Page 99

MCA 15 - MCA 25 MCA 25/28 MI

6 Switching off the appliance

6.1 Installation shutdown

CAUTION

Do not switch off the boiler. If the central heating system is not used for a long period, we recommend activating the

HOLIDAYS mode.

6.2 Frost protection

When the heating water temperature in the boiler falls by too much, the integrated protection system in the boiler starts up. This protection functions as follows:

6. Switching off the appliance

4 If the water temperature is lower than 7°C, the heating pump starts

up.

4 If the water temperature is lower than 4°C, the boiler starts up. 4 If the water temperature is higher than 10°C, the boiler shuts down

and the heating pump continues to run for a short time.

CAUTION

4 The anitfreeze protection does not function if the

boiler is switched off.

4 The integrated protection system only protects the

boiler, not the installation. To protect the installation, set the appliance to HOLIDAYS mode.

The HOLIDAYS mode protects:

4 The installation if the outside temperature is lower than 3°C

(factory setting).

4 The room temperature if a remote control is connected and the

room temperature is lower than 6 °C (factory setting).

4 The domestic hot water tank if the tank temperature is lower

than 4 °C (the water is reheated to 10 °C).

To configure the holidays mode: ¼ Refer to the user instructions.

29/04/2010 - 300022146-001-B

Page 100

7. Checking and maintenance

7 Checking and maintenance

7.1 General instructions

WARNING

4 Maintenance operations must be done by a qualified

engineer.

4 An annual inspection is compulsory. 4 Only original spare parts must be used.

4 Have the flues swept at least once a year or more, depending on

the regulations in force in your country. ¼ See chapter: "Chimney sweep instructions", page 98

4 Carry out the inspection and standard maintenance operations

once a year. ¼ See chapter: "Standard inspection and maintenance

operations", page 100

4 Carry out specific maintenance operations if necessary.

¼ See chapter: "Specific maintenance operations", page 106

MCA 15 - MCA 25 MCA 25/28 MI

7.2 Chimney sweep instructions

CAUTION

Have the flues swept at least once a year or more, depending on the regulations in force in your country. Only a qualified engineer may carry out the following operations.

Press the - key. Check the combustion each time the flues are swept. ¼ See

chapter: "Setting the air/gas ratio (Full load)", page 67 + "Setting the air/gas ratio (Part load)", page 69

To go back to the main display, press key j2 times.

29/04/2010 - 300022146-001-B

DeDietrich Innovens MCA 15, Innovens MCA 25/28 MI, Innovens MCA 25 Installation And Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual